Lady Aisha (may Allah be pleased with her) narrates that I used to have some missed fasts of Ramadan to make up, but I could not observe them until the month of Sha'ban arrived. Yahya says that I think Lady Aisha (may Allah be pleased with her) could not fast (until the next Sha'ban) due to being occupied in the service of the Prophet Muhammad (peace be upon him). Yahya says that she used to seek permission from him until the next Ramadan arrived.