Two of the Prophets surviving children, Ruqayya and Umm Kulthum, would be buried beside their sister Zaynab Radhiallahu Anha in the cemetry of Medina. Not so his equally beloved- though adopted – son Zayd Radhiallahu anho, who died in the hills of Syria (alongside the Prophet Sallallahu alaihi wasalams yound cousin Jafar RA. ) at the battle of Mutah. Muhammad saw could not pray over their distant graves though He (Sallallahu alaihi wasalam) did walk out and greet the warriors returning from this battle, holding the bridle of his favourite mule, Duldul, on which was seated Jafar’s young son. ….
The day before Aisha Radhiallahu Anha had peeped through the curtain and watched the Prophet share the grevious news with the household of Jafar. Although Jafar was Ali’s full brother (ra), and so might be reduced in Aisha’s eyes, not a hint of that enters in to her description. The Prophet Sallallahu alaihi wasalam, once he entered the house, had called for the boys so that he could tell them himself, but first he embraced them – and as he did so his eyes filled with tears. When he returned to his own household (in which were gathered all the grieving family of Zayd) he gave instructions that food should also be cooked those next few days for the family of Jafar, ‘for their grief doth busy them beyond caring for their own needs’. Just as he was about to reach his own door, he was seen by the little orphaned daughter of Zayd, who ran straight in to Muhammad’s arms (Sallallahu alaihi wasalam) as he hugged that child to him he wept unrestrainedly and his body shook with sobs. An Awed believer stood aside in astonishment and asked, “What is this?” The prophet Sallallahu alaihi wasalam answered, “This is one who loveth yearning for his beloved.”….
(From these cherished memories of how the Prophet (Sallallahu alaihi wasalam reacted to the death of his daugther and his adopted son come the practices if burial and bereavement still practiced by Muslims today) ….
Excerpt from “The Heirs of the Prophet Muhammad and the roots of the Sunni Shia Schism, Barnaby Rogerson)….