Question: My wife, may Allaah confer mercy on her, died two weeks ago. She had to make up for seven days of the past Ramadaan in which she had her monthly period and she died without making up for them.
Should I fast on her behalf? Please take into consideration that I have to make up for a month, or should I fast what is required on me first and for her after that?
Answer: If the reality is as you mentioned, then it is incumbent on you to make up for your missed fast, and after that it is permissible to fast on behalf of your deceased wife. The Prophet (peace be upon him) said… read more here.