Musannaf Ibn Abi Shaybah 9767 — The last ten days of Ramadan

Qanan bin Abdullah al-Nihmi said: I asked Zirr about Laylat al-Qadr. He said: Sayyiduna Umar, Sayyiduna Hudhayfah (may Allah be pleased with them) and many of the Companions had no doubt about it that Laylat al-Qadr is the twenty-seventh night of Ramadan. Zirr said: So spend it in continuous worship.