Musannaf Ibn Abi Shaybah

Hazrat Abu Huraira narrates that once the Messenger of Allah, peace and blessings be upon him, said: "How many days of the month have passed?" We said, "Twenty-two days have passed and eight remain." The Noble Prophet, peace and blessings be upon him, said: "No, rather twenty-two days have passed and seven days remain. Seek it in the night." Then the Noble Prophet, peace and blessings be upon him, said: "A month is like this, a month is like this." He said this three times and paused once.