Yaasir and ‘Ammaar lived with Abu Huzaifah until the end of his life. Thereafter, when Allah Ta‘ala made Islam known to the people, then Hazrat Yaasir (radhiyallahu ‘anhu), Hazrat Sumayyah (radhiyallahu ‘anha), Hazrat ‘Ammaar (radhiyallahu ‘anhu) and his brother, Hazrat ‘Abdullah bin Yaasir (radhiyallahu ‘anhu), all embraced Islam.

Hazrat ‘Ammaar (radhiyallahu ‘anhu) had another brother who was older than him. His name was Huraith bin Yaasir, and he was murdered by the Banu Dail clan in the time of jaahiliyyah (pre-Islamic era).

(Extracted from Seeratul Mustafa 1/225-226)