Muslim narrated (670) that Sammaak ibn Harb said: I said to Jaabir ibn Samurah: Did you sit with the Messenger of Allaah (peace and blessings of Allaah be upon him)? He said: Yes, frequently. He would not get up from the place in which he had prayed Fajr until the sun had risen, and when the sun had risen he would get up. They used to chat and talk about matters of the Jaahiliyah, and they would laugh and he smiled.

Al-Tirmidhi narrated that Anas ibn Maalik (may Allaah be pleased with him) said: The Messenger of Allaah (peace and blessings of Allaah be upon him) said: “Whoever prays Fajr in congregation then sits remembering Allaah until the sun rises, then prays two rak’ahs, will have a reward like that of Hajj and ‘Umrah.” He said: The Messenger of Allaah (peace and blessings of Allaah be upon him) said: “In full, in full, in full.”