مُسْنَدُ أَحْمَدَ
Musnad Ahmad 3200
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated that Ibn "Abbas (رضي الله عنه) said: A man came to the Prophet (ﷺ) and said: My sister had vowed to do Hajj, but she died. He said: “Do you think that if she owed a debt, would you pay it off?” He said: Yes. He said: “Allah, may He be blessed and exalted, is more deserving of it being paid off.
Musnad Ahmad 3224Its isnad is saheeh, al-Bukhari (6699)]