Introduction

Al-Kaba'ir — The Major Sins — is one of the most widely read and memorized works of moral theology in the Islamic tradition. Its author, Shams al-Din Muhammad ibn Ahmad al-Dhahabi (673–748 AH / 1274–1348 CE), was born in Damascus and stands as perhaps the greatest hadith critic and historian of the medieval Islamic world. His monumental contributions include Siyar A'lam al-Nubala', Mizan al-I'tidal, Tarikh al-Islam, and Tadhkirat al-Huffaz — together an almost incomprehensible scholarly output that shaped every subsequent generation of hadith scholars. Al-Kaba'ir is a shorter and more practically oriented work, but it is the one that has reached the largest popular audience across the Muslim world.

The book addresses a fundamental question of Islamic ethics and theology: what constitutes a major sin (kabira), and what are the specific offenses that fall into that category? The distinction between major sins — those that carry specific Qur'anic or prophetic threats of punishment, whether in this world or the next — and minor sins is one with profound consequences for a believer's moral life and ultimate salvation. Al-Dhahabi draws this distinction carefully and proceeds to examine each major sin in turn, documenting its definition, its Qur'anic basis, the hadith warnings against it, and its spiritual and worldly consequences.

Al-Dhahabi's method is that of a trained muhaddith applying his craft to moral instruction. For each sin he marshals the relevant evidence from the Quran and authenticated hadith with characteristic precision, and his evaluations of narrations reflect his lifetime mastery of rijal criticism. The work covers a wide range of offenses: associating partners with Allah, murder, consuming orphans' wealth, sorcery, fleeing the battlefield, slander of chaste women, riba, theft, consuming intoxicants, neglect of prayer, breaking family ties, treachery, backbiting, tale-bearing, arrogance, and many others. The list is neither arbitrary nor exhaustive — it follows the canonical hadith enumerations and the scholarly consensus about what constitutes a kabira, while al-Dhahabi adds his own organization and commentary.

The book has enjoyed extraordinary reach because it combines scholarly rigor with pastoral directness. Al-Dhahabi does not write for specialists alone. He writes for every Muslim who wishes to understand the moral architecture of the religion, to know what God and His Messenger have specifically warned against, and to guard his own conduct accordingly. The brevity and clarity of the chapters make the book suitable for memorization, and it has traditionally been among the first books assigned to students in Islamic educational circles. Translations exist in dozens of languages, and new editions continue to appear regularly.

From the perspective of Ahl us-Sunnah wal-Jama'ah, Al-Kaba'ir represents the tradition at its most responsible: grounding moral instruction firmly in revelation rather than speculative theology, taking sin seriously without descending into despair, and always pairing the warning about sin with the reminder of God's mercy and the door of repentance. Al-Dhahabi closes the work with a discussion of tawbah — sincere repentance — reminding the reader that no sin, however major, is beyond God's forgiveness for the one who turns back to Him with a sincere and contrite heart. This balance of warning and hope is the mark of sound Islamic moral teaching, and it is what has made this book a companion to Muslim conscience across seven centuries.