Musannaf Ibn Abi Shaybah

Hazrat Anas (may Allah be pleased with him) narrates that sometimes the Holy Prophet (peace and blessings be upon him) would fast continuously in such a way during a month that we would feel he would not stop fasting, and sometimes he would stop fasting in such a way that we would feel he would not fast.

Hazrat Usman bin Hakeem says that I asked Hazrat Saeed bin Jubair about fasting in the month of Rajab. He replied that I heard Hazrat Abdullah bin Abbas say that the Holy Prophet (peace and blessings be upon him) would sometimes fast continuously to such an extent that we would feel he would never stop fasting, and at other times he would leave off fasting to such an extent that we would feel he would not fast.

Hazrat Aisha (may Allah be pleased with her) narrates that to the best of my knowledge, the Prophet Muhammad (peace and blessings be upon him) did not fast an entire month except for Ramadan.

Hazrat Abdullah bin Shaqiq reports that I asked Hazrat Aisha (may Allah be pleased with her) about the fasts of the Holy Prophet (peace and blessings be upon him), so she replied that to my knowledge, the Holy Prophet (peace and blessings be upon him) did not fast the entire month in any month except Ramadan.