Narrated Abu Huraira: The Prophet said, "The prayer offered in congregation is twenty five times more superior (in reward) to the prayer offered alone in one's house or in a business center, because if one performs ablution and does it perfectly, and then proceeds to the mosque with the sole intention of praying, then for each step which he takes towards the mosque, Allah upgrades him a degree in reward and (forgives) crosses out one sin till he enters the mosque. When he enters the mosque he is considered in prayer as long as he is waiting for the prayer and the angels keep on asking for Allah's forgiveness for him and they keep on saying: 'O Allah! Be Merciful to him, O Allah! Forgive him, as long as he keeps on sitting at his praying place and does not pass wind. (Sahih Bukhari, Book Number 8, Hadith Number 466)

Narrated Abu Huraira: The Prophet said, "Allah will give shade, to seven, on the Day when there will be no shade but His. (These seven persons are) a just ruler, a youth who has been brought up in the worship of Allah (i.e. worships Allah sincerely from childhood), a man whose heart is attached to the mosques (i.e. to pray the compulsory prayers in the mosque in congregation), two persons who love each other only for Allah's sake and they meet and part in Allah's cause only, a man who refuses the call of a charming woman of noble birth for illicit intercourse with her and says: I am afraid of Allah, a man who gives charitable gifts 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), and a person who remembers Allah in seclusion and his eyes are then flooded with tears." (Sahih Bukhari, Book Number 11, Hadith Number 629)

Narrated Abu Qatada Al-Aslami: Allah's Apostle said, "If anyone of you enters a mosque, he should pray two Rakat before sitting." (Sahih Bukhari, Book Number 8, Hadith Number 435)