Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) narrates that a woman came to the Prophet (peace and blessings be upon him) and said: O Messenger of Allah! My sister has passed away and she owed two consecutive months of fasting (should I fast on her behalf?), the Prophet (peace and blessings be upon him) said: Tell me, if your sister had a debt, would you pay it off? She said: Yes! He said: Then Allah’s right is even more deserving to be fulfilled.

Sayyidah Aisha (may Allah be pleased with her) narrates that the Messenger of Allah (peace and blessings be upon him) said: Whoever dies and has fasts due upon him, his guardian should fast on his behalf.

Sayyiduna Abdullah bin Abbas (may Allah be pleased with them) narrates that a man came to the Prophet (peace and blessings be upon him) and said: My sister has passed away; she had made a vow to perform Hajj (what should I do?), he (the Prophet) said: If she had a debt, would you pay it off? He said: Yes! The Prophet said: Then fulfill Allah’s right as well, for He is more deserving that His right be fulfilled.

Sayyiduna Jabir (may Allah be pleased with him) reports that a man made a vow to pray in Bayt al-Maqdis, so the Messenger of Allah (peace and blessings be upon him) said to him: "Pray here in Masjid al-Haram." He said: "O Messenger of Allah! I have vowed to pray in Bayt al-Maqdis." He (the Prophet) said: "Pray here."