Narrated Abu `Uthman: Usama bin Zaid said that while he. Sa`d and Ubai bin Ka`b were with the Prophet a daughter of the Prophet sent a message to him, saying. 'My daughter is dying; please come to us." The Prophet sent her his greetings and added "It is for Allah what He takes, and what He gives; and everything before His sight has a limited period. So she should hope for Allah's reward and remain patient." She again sent a message, beseeching him by Allah, to come. So the Prophet got up. and so did we (and went there). The child was placed on his lap while his breath was irregular. Tears flowed from the eyes of the Prophet. Sa`d said to him, "What is this, O Allah's Apostle?" He said. "This Is Mercy which Allah has embedded in the hearts of whomever He wished of His slaves. And Allah does not bestow His Mercy, except on the merciful among His slaves. (See Hadith No. 373 Vol. 2)

Narrated Usama bin Zaid: The daughter of the Prophet (p.b.u.h) sent (a messenger) to the Prophet requesting him to come as her child was dying (or was gasping), but the Prophet returned the messenger and told him to convey his greeting to her and say: "Whatever Allah takes is for Him and whatever He gives, is for Him, and everything with Him has a limited fixed term (in this world) and so she should be patient and hope for Allah's reward." She again sent for him, swearing that he should come. The Prophet got up, and so did Sa`d bin 'Ubada, Mu`adh bin Jabal, Ubai bin Ka`b, Zaid bin Thabit and some other men. The child was brought to Allah's Apostle while his breath was disturbed in his chest (the sub-narrator thinks that Usama added:) as if it was a leather water-skin. On that the eyes of the Prophet (p.b.u.h) started shedding tears. Sa`d said, "O Allah's Apostle! What is this?" He replied, "It is mercy which Allah has lodged in the hearts of His slaves, and Allah is merciful only to those of His slaves who are merciful (to others).