Ubayy bin Kaab reported,

Ubayy said concerning Laylat al-Qadr, "By Allah, I certainly know which night it is. To the best of my knowledge it is the night the Messenger of Allah ﷺ commanded us to spend in prayer, the twenty-seventh night."Shuba was uncertain only about this phrase, "it is the night which the Messenger of Allah ﷺ commanded us about." He said, "A companion of mine narrated it to me from him."

Muslim 1787

Sahih

وحدثني عبيد الله بن معاذ حدثنا أبي حدثنا شعبة بهذا الإسناد نحوه ولم يذكر إنما شك شعبة وما بعده

مسلم 1787صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Muslim
Book
Travelers' prayer and its shortening
Chapter
Encouragement to observe the night prayer of Ramadan, which is tarawih
Numbering
Darussalam 1787
Muslim 1787