Abu Musa Ashari reported,

News reached us of the Prophet's ﷺ emigration while we were in Yemen, so we set out as emigrants to join him, myself and two of my brothers, I being the youngest. One was Abu Burda and the other Abu Ruhm. He said either, "Among a group of," or, "Among fifty-three," or, "Fifty-two men from my people."We boarded a ship, and our ship cast us upon the Negus in Abyssinia. There we met Jafar bin Abu Talib and his companions with him.Jafar said, "The Messenger of Allah ﷺ sent us here and ordered us to remain, so stay with us."We stayed with him until we all came together and met the Prophet ﷺ just as he had conquered Khaybar. He allotted us a share, or he said, "He gave us from it." He did not allot anything from it to anyone who had been absent from the conquest of Khaybar, except to those who were present with him, apart from the people of our ship along with Jafar and his companions, to whom he allotted shares together with them.

عن أبي موسى قال

بلغنا مخرج النبي ﷺ ونحن باليمن، فخرجنا مهاجرين إليه أنا وأخوان لي، أنا أصغرهم، أحدهما أبو بردة والآخر أبو رهم، إما قال: في بضع وإما قال: في ثلاثة وخمسين أو اثنين وخمسين رجلا من قومي، فركبنا سفينة، فألقتنا سفينتنا إلى النجاشي بالحبشة ووافقنا جعفر بن أبي طالب وأصحابه عنده فقال جعفر: إن رسول الله ﷺ بعثنا هاهنا، وأمرنا بالإقامة فأقيموا معنا، فأقمنا معه حتى قدمنا جميعا فوافقنا النبي ﷺ حين افتتح خيبر، فأسهم لنا أو قال: فأعطانا منها وما قسم لأحد غاب عن فتح خيبر منها شيئا إلا لمن شهد معه إلا أصحاب سفينتنا مع جعفروأصحابه قسم لهم معهم.