Which companion was famously tortured for his faith by being made to lie on hot sand while repeating ‘Ahad, Ahad’ (One, One)?

Explanation

– Bilal ibn Rabah (RA), an Abyssinian slave, was famously tortured by being made to lie on hot sand under a heavy rock while steadfastly repeating ‘Ahad, Ahad,’ affirming the Oneness of Allah.
– He was eventually freed by Abu Bakr (RA) and later became well known for his beautiful voice, serving as the first Mu’adhin (caller to prayer) in Islamic history.
– For exams, note that Bilal (RA) is often cited as a powerful early example of racial equality and dignity within the Muslim community.