Narrated Abu Huraira: A bedouin came to Allah's Apostle and said, "My wife has delivered a black boy, and I suspect that he is not my child." Allah's Apostle said to him, "Have you got camels?" The bedouin said, "Yes." The Prophet said, "What color are they?" The bedouin said, "They are red." The Prophet said, "Are any of them Grey?" He said, "There are Grey ones among them." The Prophet said, "Whence do you think this color came to them?" The bedouin said, "O Allah's Apostle! It resulted from hereditary disposition." The Prophet said, "And this (i.e., your child) has inherited his color from his ancestors." The Prophet did not allow him to deny his paternity of the child.

Narrated Ibn `Abbas: A woman came to the Prophet and said, "My mother vowed to perform the Hajj but she died before performing it. Should I perform the Hajj on her behalf?" He said, "Yes! Perform the Hajj on her behalf. See, if your mother had been in debt, would you have paid her debt?" She said, "Yes." He said, "So you should pay what is for Him as Allah has more right that one should fulfill one's obligations to Him. "