Noted Indian writer and polymath Ram Swarup explores the meaning of Islam through the words of the Sahih Muslim, considered by Muslims to be one of the most authoritative of the collections of "traditions" (Arabic Hadith) about the life of the Prophet Muhammad. Like the Koran, these traditions are believed to be divinely revealed by Allah and they complement the verses of the Koran, in many cases expanding upon them and explaining the context of their revelation. As Swarup notes in his introduction, to Muslims the Hadith literature represents the Koran in action, stories of "revelation made...