Name: Bilaal bin Rabaah (radhiyallahu ‘anhu)

Mother’s Name: Hamaamah (Isaabah 1/455)

Steadfastness on Islam:

Hazrat Bilaal (radhiyallahu ‘anhu) had been born from the slaves of the Banu Jumah tribe. When the heat would peak at midday, Umayyah bin Khalaf would take him out of Makkah Mukarramah to the scorching sands of the desert and make him lie on his back on the burning sand. He would then have a huge boulder placed on the chest of Hazrat Bilaal (radhiyallahu ‘anhu) and would declare, “He will remain (in punishment) like this until he either dies or renounces his belief in Muhammed (sallallahu ‘alaihi wasallam).” Even in that tortured state, Hazrat Bilal (radhiyallahu ‘anhu) would continue to say “Ahad! Ahad!” (“One! One!” – referring to his belief in the oneness of Allah Ta‘ala).
(Isaabah 1/456)

Nabi (sallallahu ‘alaihi wasallam)’s desire for Hazrat Bilaal (radhiyallahu ‘anhu) to be freed:

Hazrat Sa‘eed bin Musayyib (rahimahullah), while mentioning Hazrat Bilaal (radhiyallahu ‘anhu), once said, “The desire to practice Islam was extremely great in the heart of Hazrat Bilaal (radhiyallahu ‘anhu). He would be subjected to continuous torture and persecution at the hands of the disbelievers. Whenever the disbelievers would try to force him to renounce Islam, he would staunchly refuse and declare “Allah! Allah!” Nabi (sallallahu ‘alaihi wasallam) then met Hazrat Abu Bakr (radhiyallahu ‘anhu) and expressed his desire saying, “If only we had some wealth by which we would be able to purchase (and free) Hazrat Bilaal (radhiyallahu ‘anhu)!” Hazrat Abu Bakr (radhiyallahu ‘anhu) therefore went to Hazrat ‘Abbaas (radhiyallahu ‘anhu) and asked him to purchase Hazrat Bilaal (radhiyallahu ‘anhu) for him. Accordingly, Hazrat ‘Abbaas (radhiyallahu ‘anhu) approached the owner of Hazrat Bilaal (radhiyallahu ‘anhu), who was a woman, and said, “Would you like to sell me this slave of yours before you lose all the good that you can currently derive from him?” The woman was surprised and exclaimed, “What will you do with him?” after which she went on to complain about him saying, “There is no good in him! He is like this and like that!” Hazrat ‘Abbaas (radhiyallahu ‘anhu) eventually purchased Hazrat Bilaal (radhiyallahu ‘anhu) from her and sent him to Hazrat Abu Bakr (radhiyallahu ‘anhu).
(Usdul Ghaabah 1/237)