Be mindful of your promises and vows even after someone has passed away; Respect your parents even after their passing by fulfilling any promises or vows they may have made during their lifetime; Keep your word and be honest in your words and actions; Honor commitments you make with others.

This hadith is about fulfilling a vow after the death of a person who made it. Sa'd bin 'Ubadah asked the Prophet Muhammad about a vow his mother had sworn but died before she could fulfill it. The Prophet advised him to fulfill it on her behalf. This teaches us that we should be mindful of our promises and vows even after someone has passed away as they still need to be fulfilled in order for us to remain true and honest in our words and actions. It also shows us that we should respect our parents even after their passing by fulfilling any promises or vows they may have made during their lifetime.