Sayyida Umm Salama (may Allah be pleased with her) said: I did not see the Messenger of Allah (peace and blessings be upon him) fasting an entire month except for Sha'ban. He used to join the fasts of Sha'ban with Ramadan so that it would be as if he fasted two consecutive months. He would fast during a month to the extent that we would say: Now he will not break his fast, and then he would break his fast to the extent that we would say: Now he will not fast.