Worship in Islam is an in-depth study of the nature and significance of Islamic spirituality by Abul A'la Mawdudi (1903 - 79), one of the leading Muslim intellectuals of the twentieth century, with special reference to the concepts of God's Oneness (tawhid), the finality of Prophethood (risalah) and the Islamic system of worship ('ibadah) with a focus upon prayer (salah) and fasting (sawm) and their role in the development of the Islamic personality and Islam's social order. The distinguishing feature of Mawdudi's approach is his elaboration of the social dimension of worship, which extends the traditional approach found in Islamic jurisprudence, with its focus upon ritual and self-purification, to consider worship's transformative role in social life. Presenting a holistic view of the Islamic system, Mawdudi highlights Islam's social, economic and political dimensions, which he argues has the capacity to resolve emergent issues and problems that humankind faces. This historic text should be of wider interest to both students and specialists in contemporary Islamic thought, and includes an introduction by Professor Anis Ahmad.