The Lawful and the Prohibited in Islam has, since its, first publication in 1960, enjoyed a hugh readership. It dispels the ambiguities surrounding the Shari\'ah, serving as an essential reference work for the Muslims of this age. It clarifies the Lawful (halal) and why it is lawful, and prohibited (haram) and why it is prohibited, referring to the Qur\'an and the Sunnah. It answers many of the questions which Muslims face today. In a very simple way, the book delves into the authentic references in Islamic jurisprudence and fiqh to extract judgements of interest to contemporary Muslims on matters of worship, business dealings, marriage and divorce, food and drink, dress and adornment, patterns of behavior, individual and group relations, family and social ethics, habits and social customs. Referring to authentic texts, it carifies that \"Permissibility, is the rule in everything, unless it is otherwise specified in matters that adversely affect individuals or groups.\" It also stipulates that \"Allah is the only authority who has the right to legislate for the lawful and the prohibited.\"