The Prophet (pbuh) said: “Whoever observes night prayer in Ramadan as an expression of his faith and to seek reward from Allah, his previous sins will be blotted out”. (Sahih Bukhari, Volume 3, Book 32, Number 226)
Muslims should during this month make an extra effort to perform Taraweeh Prayer (Ramadan nightly prayer), preferably in congregation. Taraweeh has a special merit over other nights. Taraweeh is part of physical and spiritual training, for its observation soon after Iftaar insures timely and proper digestion of food. There are also spiritual rewards awaiting the observers of this prayer. It must be mentioned here that Taraweeh prayers, although very beneficial to read, are not compulsory as stated by the Prophet (pbuh) himself.
‘A’isha reported that Prophet (pbuh) prayed one night in the mosque and people also prayed along with him. He then prayed on the following night and there were many persons. Then on the third or fourth night (many people) gathered there, but the Prophet (pbuh) did not come out to them (for leading the Tarawih prayer). When it was morning he said: “I saw what you were doing, but I desisted to come to you (and lead the prayer) for I feared that this prayer might become obligatory for you”. (He the narrator) said: It was the month of Ramadan. (Sahih Bukhari, Volume 2, Book 13, Number 46)