Masaa'il al-Jaahiliyyah (Aspects of the Days of Ignorance) is a unique and powerfully insightful work warning against the worst traits of the days of pre-Islamic ignorance, authored by one of the most knowledgeable and authoritative scholars of the past few centuries, Shaykh al-Islam Muhammad ibn 'Abdil-Wahhaab at-Tameemee (may Allah have Mercy on him).