Maliks Muwatta Book 008, Hadith Number 007.

Section : The Isha and Subh Prayers.

Yahya related to me from Malik from Ibn Shihab from Abu Bakr ibn Sulayman ibn Abi Hathma that Umar ibn al-Khattab missed Sulayman ibn Abi Hathma in the subh prayer. In the morning he went to the market, and Sulayman's house was between the market and the Prophet's mosque. He passed ash-Shifa, Sulayman's mother, and said to her, "I did not see Sulayman at subh." She replied, "He spent the night in prayer and his eyes overcame him. Umar said, "I would rather be present at subh than stand the whole night in prayer.