This book, consolidating the author's all earlier works on Muslim law, was first published in 2012. In the light of his fresh thinking and experiences of the last over four years he has recast it, simplifying the arrangement of chapters and subjecting each of them to a thorough revision. The book offers in two separate parts a critical study of the Indian legislation on Muslim law and its uncodified principles, explaining the latter with reference to its original sources and indicating its reform in several other countries. With a view to making it a comprehensive source book, extracts from some of the author's other works published elsewhere have been appended in two Supplements.