It is narrated from Hazrat Usama (may Allah be pleased with him) that once a daughter of the Noble Prophet (peace and blessings be upon him) sent a message to the service of the Noble Prophet (peace and blessings be upon him) that her child was in the throes of death, and requested that he come to them. The Noble Prophet (peace and blessings be upon him) sent his greetings to her and said: "What He takes belongs to Allah, and what He gives belongs to Allah, and everything has an appointed time with Him. Therefore, you should be patient and hope for reward upon this." She again sent a messenger to the Noble Prophet (peace and blessings be upon him), insisting by oath. So the Noble Prophet (peace and blessings be upon him) stood up, and we also stood up with him. The child was brought and placed in the lap of the Noble Prophet (peace and blessings be upon him), and his soul was departing. Among the people present at that time were Hazrat Sa'd bin Ubadah (may Allah be pleased with him) and, it seems, Hazrat Ubayy (may Allah be pleased with him) as well. Tears began to flow from the eyes of the Noble Prophet (peace and blessings be upon him). Seeing this, Hazrat Sa'd (may Allah be pleased with him) said, "O Messenger of Allah! What is this?" He replied, "This is mercy, which Allah places in the hearts of whichever of His servants He wills. And Allah shows mercy only to those of His servants who are merciful."