Narrated Aisha (may Allah be pleased with her): The Prophet (peace and blessings of Allah be upon him) spent a night awake (in vigilance). After arriving in Madinah, he (peace be upon him) said, "Would that a righteous man from among my companions would guard me tonight!" (While these words were being spoken,) we heard the clanging of weapons. The Prophet (peace be upon him) asked, "Who is it?" (The person coming) said, "It is Sa'd bin Abi Waqqas. I have come to guard you." Then the Prophet (peace be upon him) was pleased, prayed for him, and went to sleep.

Hazrat Ali (may Allah be pleased with him) narrated that after Sa’d bin Abi Waqqas (may Allah be pleased with him), I did not hear the Prophet Muhammad (peace and blessings be upon him) say about anyone that he would sacrifice himself for them. I heard that the Prophet (peace and blessings be upon him) was saying,“Shoot arrows (O Sa’d, may Allah be pleased with him), may my parents be sacrificed for you.”

Hazrat Sa'd bin Abi Waqqas (may Allah be pleased with him) narrated that on the occasion of the Battle of Uhud, the Prophet Muhammad (peace and blessings be upon him) combined his parents for me (and said: "May my mother and father be sacrificed for you.").