Abu Dawud
Prayer
Book Number: 002 / Hadith Number: 1289
Narated By Simak : I asked Jabir b. Samurah: Did you sit in the company of the Apostle of Allah (pbuh)? He replied: Yes, very often. He would not stand from the place he prayed the dawn prayer till the sunrise. When the sun rose, he would stand (to pray in the forenoon).