It is narrated from Hazrat Aisha (may Allah be pleased with her) that one night I did not find the Prophet (peace and blessings be upon him) on my bed. I went out and found the Prophet (peace and blessings be upon him) in Jannat al-Baqi', raising his head towards the sky and supplicating. When he saw me, he said, "Did you fear that Allah and His Messenger would wrong you?" I said, "O Messenger of Allah! I thought perhaps you had gone to one of your wives." The Prophet (peace and blessings be upon him) said, "Allah Almighty descends to the lowest heaven on the fifteenth night of Sha'ban and forgives more people than the number of hairs on the sheep of the tribe of Kalb."