Abdullah bin Jafar bin Abu Talib reported,

Abdullah bin Jafar said, "If only you had seen me along with Qutham and Ubaydullah, the two sons of Abbas, when we were boys playing together. The Prophet ﷺ passed by riding a mount and said, 'Lift this one up to me.' He sat me in front of him, then said about Qutham, 'Lift this one up to me as well,' and placed him behind him. Now Ubaydullah was dearer to Abbas than Qutham, yet he felt no embarrassment before his uncle that the Prophet ﷺ carried Qutham and left Ubaydullah behind. Then he wiped his hand over my head three times, and each time he wiped he said, 'O Allah, take Jafar's place in caring for his offspring.'"The narrator said, I asked Abdullah, "What became of Qutham?"He replied, "He was martyred."I said, "Allah and His Messenger know best what is good."He said, "Indeed."

عن عبد الله بن جعفر قال

لو رأيتني وقثم وعبيد الله ابني عباس ونحن صبيان نلعب، إذ مر النبي ﷺ على دابة، فقال: ارفعوا هذا إلي قال: فحملني أمامه، وقال لقثم: ارفعوا هذا إلي فجعله وراءه، وكان عبيد الله أحب إلى عباس من قثم، فما استحى من عمه أن حمل قثم وتركه، قال: ثم مسح على رأسي ثلاثا، وقال كلما مسح: اللهم اخلف جعفرا في ولده. قال: قلت لعبد الله: ما فعل قشم؟ قال: استشهد قال: قلت: الله أعلم بالخير ورسوله بالخير. قال: أجل.