The call to prayer
After the migration, Muhammad ﷺ entrusted Bilal with giving the call to prayer. This regular public role made him one of the most recognizable members of the Medinan community.
Source: TDV Encyclopaedia of Islam — Bilal ibn Rabah
Later life
Bilal took part in major events of the early community and later lived in the Levant. Accounts vary over the precise year and place of his death. His legacy is closely associated with steadfast belief and the daily rhythm of Muslim worship.
Source: TDV Encyclopaedia of Islam — Bilal ibn Rabah