The Beloved, Al Mustafa (PBUH) used to seclude himself for devotion in the last ten days of the month of Ramadan. He went on doing that untill he died. Hence, seclusion is one of the surest and the most continuous practice in his honored life (PBUH).
When the people of faith engage in this honored sublime Sunnah, they feel specific intimacy with the house of Allah. In seclusion, there are welfare and blessings that only Allah knows. In it, there is much private intimate discourse with Allah; the slave hears the words of his Lord; sins and faults become less; one gets out of himself and learns honesty and sincerity in the presence of his Lord…
But the fruits that I want to point out to in this prescribed seclusion, we learn from Al Mustafa (PBUH), is the intimacy that the people of faith feel with the House of Allah. Man is used to being intimate with the house he lives in with his family. But in the short Sunnah of seclusion that does not exceed ten days, the believer finds his heart attached to Al Masjid (the mosque), and wishes he would spend all his life in it, though the Exalted Allah charges him with the task of being the source of blessed seeking for livelihood on the earth.
The heart's attachment to Al Masjid, the House of Allah, is one of the causes that makes the believer be in the shade of Allah on the Day of Judgment, under the Throne of Ar Haman (most Compassionate). When the Beloved, Al Mustafa (PBUH) counted the seven types of people who will be favored by being in the shade of Allah on the Day of Judgment, he mentioned the one whose heart is attached to Al Masajid (plural of mosque). How if this honorable Sunnah leads the secluded to practice many states that lead him to be shaded under the Throne of Ar Rahman on the Judgment Day!!
Is it not the person who remembers Allah in seclusion and his eyes get flooded with tears?
Is it not a young man who has been brought up in the worship of Allah?
Is it not the two persons who love each other only for Allah's sake and they meet and part in Allah's cause only?
Is it not a man whose heart is attached to Al Masjid (who offers the five compulsory congregational prayers in the mosque)?
He may also be a person who practices charity so secretly that his left hand does not know what his right hand has given (i.e. nobody knows how much he has given in charity).
Hence, the one who practices seclusion in the last ten days of Ramadan will belong to five groups out of seven that are mentioned by our Imam and Beloved, our Master Muhammad (PBUH) when he tells about the Judgment Day in which there are many terrors, and people sink in their sweat that might reach their throats.
The intimacy the believer finds in his heart with the House of Allah is mentioned in the Book of the Exalted Allah in Surat An Nur, when He, Exalted He is, said: "Allah is the Light of the heavens and the earth. The parable of His Light is as if there were a Niche and within it a Lamp; the Lamp enclosed in Glass; the glass as it were a brilliant star; lit from a blessed Tree, an Olive, neither of the East nor of the West, whose Oil is well nigh Luminous, though fire scarce touched it; light upon Light! Allah does guide whom He will to His Light; Allah does set forth Parables for men; and Allah does know all things. Lit is {such a Light} in houses, which Allah has permitted to be raised to honor; for the celebration, in them, of His name; in them, He is glorified in the mornings and in the evenings, {again and again} By men whom neither selling nor merchandise can divert from the Remembrance of Allah, nor from regular Prayer, nor from the practice of regular Charity: their {only} fear is for the Day when hearts and eyes will be transformed {in a world wholly new}. Allah may reward them according to the best of their deeds, and add even more for them out of His Grace; for Allah does provide for those whom He will, without measure" (An Nur,35-38).

The one who meditates upon these verses finds that the Exalted Allah makes His Houses represent His light, because He said: "Allah is the Light of the heavens and the earth". Then He begins talking about His light that is as a Niche, and within it, there is a Lamp. The lamp is in a glass. Hardly does he explain this parable, than he moves to talk about the reality of His presence on the earth. Consequently, if you want to witness this Light on the earth, go to the House of Allah to find a similar light in it. The best regions on the earth are Al Masajid, and the worst ones are the markets.
The House of Allah is a niche in which there is a lamp. This lamp in the believer is his mentioning Allah. The glass is the believer himself who is sitting in the House of Allah with his soul not with his body. He does not do that by his body as hypocrites do. He rather enters the House of Allah by his soul that is assimilated to a glass. Thus, the lamp in this glittering glass is mentioning Allah.
Accordingly, the believer in Al Masjid is this glass, and the House of Allah is this niche.
Glorification of Allah in the hearts of men in mornings and evenings is the luminous lamp.
If you want to see the example of the light of Allah, enter the House of Allah and look for the glass in which there is a radiant lamp, lighted by the tree of monotheism referred to in another place, when the Exalted Allah said: "Haven't you seen how Allah sets forth a parable, a goodly Word like a goodly tree, whose root is firmly fixed, and its branches {reach} to the heavens?" (Ibrahim, 24).
It is the tree of monotheism that emanates from the statement: "There is no god but Allah", a statement whose roots are in the heart. Consequently, the heart derives its knowledge from this tree. As a result, it receives the support of Allah.
If the Light of Allah is represented by His House, and if the believer finds intimacy with this representation while he is in the House of Allah, and if the Exalted Allah favors him by making him taste the meaning of His Light in the last ten days of Ramadan, the result is that the believer will be in communication with this light through all the year so that his relationship with the House of Allah be continuous. Thus, when he gets out of this seclusion, his heart will always be attached to the House of Allah.
The House of Allah is called Al Masjid because in it, the believer Yasjudu (prostrates) to Allah alone. Though all the earth is Masjid, yet the specialty increases in the House of Allah, because, in this pure House, the believer does not commit sins. He rather devotes himself to worship.
When the believer gets out of his seclusion in the end of this month, and if the fasters who are deprived of the blessings of seclusion desire to accompany this example of the light of Allah, they have to observe the following three meanings:
The niche, the glass, and the lamp.
Whenever the light becomes weak in your heart, get into the niche and enter the House of Allah, and in order that you become the glass, kindle in your heart the presence with Allah in mentioning Him, mention your Lord within your heart. Mention Him within your soul glorifying Him, extolling Him, fearing Him, dreading Him, hopeful of Him…, and you will find the lamp shine in your heart, you will find that you have become chaste, and you will be changed into a glass or a brilliant star…
We are in need for these three samples outside Al Masjid, as well as inside it. They are made in Al Masjid, but they enlighten people's way outside it. The Prophetic Masjis was the starting point of life at the time of the Beloved, Al Mustafa (PBUH). It lighted life, and life derived its secrets and lights from it. Consequently, if the believer desires to regain them in his life and his society, he has only to remember this example of the light of Allah, and he has to ask himself the following question:
Am I the glass?
Am I the brilliant star that shines with the light of Allah, or sins have closed this glass so that light no more shines from it?
If the believer asks himself these questions, he will be able to control himself, his heart and his behavior. Consequently, he will get Allah's support to shine and influence the others, because he will be a brilliant star that illuminates the way for the others.
Oh Allah, let us get out of Ramadan with your forgiving our sins. Oh Allah, veil our faults, relieve our distresses, and accept us among Your saints, beloveds and the privileged ones.
Oh Allah, answer our invocation, accept us and make us from those who listen to wisdom and follow the best of it.
I say my words and ask Allah's forgiveness.