Abd Allah ibn Ja'far

[4] After the birth of Abd Allah in Abyssinia (Habesha, now Ethiopia), the king of the Kingdom of Aksum (Najashi) also had a son.

[5] The younger brother of Abd Allah appears to be the first child in Muslim history who was named Muhammad after the Islamic prophet.

[7][4] Muhammad instructed the sons of Abi Talib, namely Ja'far, Aqil and Ali that they should arrange marriages of their children with their cousins.

According to Shaykh Muhammad Abbas Qummi, Abd Allah had 20 sons from different wives, including five children from Zaynab bint Ali.

[9]: 31 Abd Allah ibn Ja'far was one of the richest people in Medina and a philanthropist who was called as “Bahr al-Joud” which means an ocean of charity.

[9]: 37  Knowing about Husayn's journey to Kufa, Zaynab, the wife of Abd Allah ibn Ja'far begged her husband's permission to accompany her brother.

It is obligatory for me to stay with you, but if I do not go with him at this time, I shall not be able to bear the separation.Abd Allah then granted his permission and sent their two sons for the destined journey.

[20] In addition to some spy reporting to Ali ibn Abi Talib that Qays ibn Sa'd, his governor at Egypt had given allegiance to Mu'awiya I, he received his letter which was written in perspective of affairs emerged on account of a conspiracy caused by opponent of Ali.

Upon advice of Abd Allah, Ali wrote a letter ordering Qays ibn Sa'd to seek the people to give their allegiance as the Muslims have done (after the 3rd Caliph).

[16]: 185–189 (VOL.XVI) Once a Chief of Iraqi village asked Abd Allah ibn Ja'far to recommend his case before Caliph Ali for accomplishment.

As a gratification the chief sent 40,000 Dirhams through some people to Abd Allah, who refused the money saying that we do not sell our good deeds[21] Knowing the death of his two sons in the Battle of Karbala, people were offering condolences to Abd Allah, one of his Mawili (Abu al-Lislas [a companion]) said that “this is what we have met and what has come upon us through Husayn ibn Ali” on this statement he struck him with his sandal and told that I am pleased that my two sons killed with my brother and cousin.

[16] : 177 Ibn Khaldun in chapter 2 volume II title “Yazid-I” from 60 to 64 AH, it is described that Abd Allah sent a letter through his sons Awn and Muhammad, to Husayn, requesting that “for God sake come back.

[22]" Later he went to Amr ibn Sa'id who was Yazid's governor of Mecca and asked him to write a letter to Husayn offering him a guarantee of harmless behavior assuring him kindness and open-handedness.