Only slavery to Allah (God in English) is allowed in Islam. All other slavery types are not allowed in Islam; as slavery to other human master, slavery to money, slavery to power, slavery to certain habit or addiction as smoking or drinking alcohols.

Before Islam era and in the early years of Islam, slavery was spread as a normal trade. Also, in wars the conquered men and women are captured as slaves. However, in Quran rules were set to limit slavery and to eliminate it gradually. Quran and Sunnah (Prophet Muhammad sayings and practices) encouraged Muslims to liberate their slaves as a way to be closer to Allah or as a penalty when committing some sins to be forgiven by Allah.

Refer to question below for information on slavery in Christianity.

All measures were taken; per Islam holy book Quran and prophet Muhammad teachings; to limit slavery and reduce it gradually until disappeared completely.

Slavery is prohibited in Islam and has been abolished in most Muslim-majority countries. However, instances of slavery or human trafficking may still occur in some parts of the world despite being condemned by Islamic teachings. Efforts are ongoing to combat these practices and uphold the principles of dignity and equality in Islam.

Islam authorizes the taking of slaves as spoils of war.