1-Prevents from Al-Fahshaa’ (great sins of every kind, unlawful sexual intercourse, etc.) and Al-Munkar (disbelief, polytheism, and every kind of evil wicked deed, etc.). [see Q:29/45].
2-The best of deeds after the Testimony of Faith (laa ilaaha illal-laah, Muhammad rasoulul-laah). [hadeeth ‘Abdullaah ibn Mas’oud (radiyallaahu 'anhu) in Bukhari (v.9; 625) & Muslim].
3-Washes out sins. [hadeeth of Jaabir (radiyallaahu 'anhu) in Muslim (v1;1410)].
4-Expiates sins. [hadeeth of Abu Hurairah (radiyallaahu 'anhu) in Muslim (v1;450)].
5-A light for its adherent in this Life and in the Hereafter. [hadeeth of Ibn ‘Umar (radiyallaahu 'anhuma) in Musnad Ahmad (v2;169) with good chain of narration].
6-Raises in rank and removes sins. [hadeeth of Thawbaan (radiyallaahu 'anhu) in Muslim (v.1; 989)].
7-One of the greatest causes to enter Paradise with the company of the Prophet (sallallaahu 'alayhi wa sallam). [hadeeth of Rabee’ah al-Aslami (radiyallaahu 'anhu) in Muslim (v1; 990)].
8-Between each performance of salaat and the next performance, sins are pardoned [hadeeth ‘Uthmaan (radiyallaahu 'anhu) in Muslim (v1;438)].
9-The angels will ask Allaah for Blessings and Forgiveness upon the adherent in his place of prayers. [hadeeth Abu Hurairah (radiyallaahu 'anhu) in Bukhari (v.3; 330) and in Muslim].
10-Waiting for the next prayer after observing a prayer is Ribaat (keeping oneself adhering and firm on acts of obedience).[hadeeth Abu Hurairah (radiyallaahu 'anhu) in Muslim (251)].
11-The one who goes to the Mosque to perform the prayer is in prayer until he returns. [hadeeth Abu Hurairah radiyallaahu 'anhu) in "saheeh" ibn Khuzaimah