Thirteenth Greater Sin: Drinking Liquor Thirteenth Greater Sin: Drinking Liquor: The thirteenth among the Greater Sins is drinking liquor. Its seriousness is proved from the traditions that have been related from Imam Musa al-Kadhim (a.s.), Imam Riďa (a.s.) and Imam Muhammad al Taqi (a.s.). The Holy Qur’an also states in unequivocal words that it is … Continue reading Thirteenth Greater Sin: Drinking Liquor