Jami at Tirmidhi 585

Anas bin Malik narrated that : the Messenger of Allah said: Whoever prays Fajr in congregation, then sits remembering Allah until the sun has risen, then he prays two Rak'ah, then for him is the reward like that of a Hajj and Umrah. He said: ..

Ibn Abbas narrated: The Messenger of Allah would glance toward the right and the left during Salat but he would not turn his neck to look behind him. ..

Sa'eed bin Abi Hind narrated from some of the companions of Ikrimah: The Prophet would glance during Salat and he mentioned a similar narration. ..

Anas narrated: The Messenger of Allah said to me: 'O my son! Beware of looking around during the Salat, for indeed looking around during Salat is destruction. If you must do so, then in the voluntary (prayers), not in the obligatory (prayers).' ..

Aishah narrated: I asked the Messenger of Allah about looking around during the Salat. He said: 'It is a portion which the Shaitan snatches during a man's prayer.' ..

Mu'adh bin Jabal narrated that : the Messenger of Allah said: When one of you comes to the Salat and (finds) the Imam is in a position, then do as the Imam is doing. ..