Urwah bin al-Zubayr (may Allah have mercy on him), naming those who emigrated to the land of Abyssinia, said: Ja'far bin Abi Talib (may Allah be pleased with him), and with him was his wife, Sayyidah Asma' bint Umays al-Khath'amiyyah (may Allah be pleased with her). In the land of Abyssinia she bore him Abdullah bin Ja'far, Awn bin Ja'far and Muhammad bin Ja'far.
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 20729