Narrated 'Abdullah bin Hishâm that his mother Zainab bint, Humaid took him to the Prophet (ﷺ) and said, "O Allâh's Messenger (ﷺ)! Take the Bai'a (pledge) from him." But he said, "He is still too young for the pledge, " and passed his hand on his (i.e. 'Abdullâh's) head and invoked for Allâh's Blessing for him. 'Abdullâh bin Hishâm, used to go to the market to buy foodstuff. Ibn 'Umar and Ibn Az-Zubair would meet him and say to him." Be our partner, as the Prophet (ﷺ) invoked Allâh to bless you." So, he would be their partner, and very often he would win a camel's load and send it home. [3:680-O.B]