This article aims to analyse and explore the historical struggle of Islam in the liberation of the ummah, especially the liberation of Bilal bin Rabbah. This article uses qualitative research with a phenomenological approach. The primary data source of this article was literature related to the story of Bilal bin Rabbah. At the same time, secondary data used comprised scientific articles, books of tafsir, and a range of books and reports related to the theme of the discussion. The results show that the story of Bilal bin Rabbah contains heroic liberation values in opposing the injustice of the Jahiliyah period. Liberation theology in Islam emphasises the values of social justice, freedom, and resistance to all forms of oppression. The life story of Bilal bin Rabah is a clear example of the application of these values, illustrating the firmness of faith, resistance to inequality, and struggle against oppression. In addition, Islam also provides indicators as a marker that the human being is free. The indicators are: Freedom of religion, Freedom of opinion and expression, Individual freedom, Economic freedom, Freedom from oppression and injustice and Freedom in education.