Muhammad ibn Ya'qub, from Ya'qub ibn Yazid, from Ibn Abi Umayr, from Hafs ibn al-Bakhtari, from Abu Abdillah عليه السلام, peace be upon him: Imam عليه السلام said: “The wives of the Prophet صلى الله عليه وعلى آله وسلم, may Allah سبحانه وتعالى bless him and his family, when they had fasting upon them, would delay that until the month of Shaban, out of dislike that they should prevent the Messenger of Allah سبحانه وتعالى, may Allah سبحانه وتعالى bless him and his family, from His صلى الله عليه وعلى آله وسلم need. So when it was Shaban, they would fast, and He صلى الله عليه وعلى آله وسلم would fast with them.” Imam عليه السلام said: “And the Messenger of Allah سبحانه وتعالى, may Allah سبحانه وتعالى bless him and his family, used to say: ‘Shaban is my month.’”