A woman came to the Prophet (ﷺ) 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. "
Sahih al-Bukhari Book 96, Hadith 46
← Previous Hadith A bedouin came to Allah's Messenger (ﷺ) and said, "My wife has delivered a black boy, and I suspect that he is not my child." Allah's Messenger (ﷺ) 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 (ﷺ) said, "Are any of them Grey?" He said, "There are Grey ones among them." The Prophet (ﷺ) said, "Whence do you think this color came to them?" The bedouin said, "O Allah's Messenger (ﷺ)! It resulted from hereditary disposition." The Prophet (ﷺ) said, "And this (i.e., your child) has inherited his color from his ancestors." The Prophet (ﷺ) did not allow him to deny his paternity of the child.

Sahih al-Bukhari Book 96, Hadith 45 Next Hadith → Allah's Messenger (ﷺ) said, "Do not wish to be like anybody except in two cases: The case of a man whom Allah has given wealth and he spends it in the right way, and that of a man whom Allah has given religious wisdom (i.e., Qur'an and Sunna) and he gives his verdicts according to it and teaches it." (to others i.e., religious knowledge of Qur'an and Sunna (Prophet's Traditions)). "

Sahih al-Bukhari Book 96, Hadith 47