It is an Arab Adnanite tribe whose lineage traces back to Adnan and Ishmael, son of Abraham through Hawazin, and its original homeland was the border area between Nejd and Hejaz in Khurmah and Ranyah.
The tribe produced several well-known Arabic poets, the most famous of whom was Labid ibn Rabi'ah, an author of one of the Seven Hanged Poems.
Muhammad declined to accept that gift because it was from a polytheist and asked Abu Bara to embrace Islam.
`Amr [Tabari Volume 7, p. 151] [3]Ibn Ishaq's biography claims that forty men were sent to them; but Sahih al-Bukhari states that there were seventy—Al-Mundhir bin 'Amr, one of Banu Sa'ida, nicknamed 'Freed to die'—commanded that group, who were the best and most learned in the Qur'an and jurisprudence.
[2] Muhammad also ordered the Expedition of Shuja ibn Wahb al-Asadi in June 629[4] with the purpose of raiding the Banu Amir tribe to plunder camels.