Musannaf Ibn Abi Shaybah 3394 — Staying away from Isha and Fajr

Yahya bin Abd al-Rahman bin Hatib said: Whenever Sayyiduna Umar (may Allah be pleased with him) went to or came back from the market, he would pass by Sayyidah al-Shifa' bint Abdullah (may Allah be pleased with her). One day in Ramadan he passed by her and asked her: Where is Sulayman (her son)? She said: He is asleep. Sayyiduna Umar asked: Did he attend the Fajr prayer? His mother said: No; he spent the whole night in worship with the people, then came and went to sleep. Sayyiduna Umar said: Offering the Fajr prayer in congregation is better in my sight than spending the whole night in worship.