Sahih Bukhari

Narrated Ibn `Abbas:A man came to the Prophet (ﷺ) and said, ""O Allah's Messenger (ﷺ)! My mother died and she ought to have fasted one month (for her missed Ramadan). Shall I fast on her behalf?"" The Prophet (ﷺ) replied in the affirmative and said, ""Allah's debts have more right to be paid."" In another narration a woman is reported to have said, ""My sister died..."" Narrated Ibn `Abbas: A woman said to the Prophet (ﷺ) ""My mother died and she had vowed to fast but she didn't fast."" In another narration Ibn `Abbas is reported to have said, ""A woman said to the Prophet, ""My mother died while she ought to have fasted for fifteen days