Musannaf Ibn Abi Shaybah 27097 — Those who permitted tasabbuh

Abu Yazid al-Madini said: Sayyiduna Umar (may Allah be pleased with him) came to Sayyiduna Suhayb (may Allah be pleased with him) in the morning and found him sleeping in the morning. He sat down until he woke up, and Sayyiduna Suhayb said: "The Commander of the Faithful is sitting in his place while Suhayb is asleep in the morning sleep?" Sayyiduna Umar said to him: "I did not like to rouse you from a sweet sleep."