Islom kelganida qullar dunyoning barcha hududlarida mavjud edi va qullik barcha xalqlar va millatlar orasida keng tarqalgan tizim edi. Yer yuzining qullar sotilmagan va erkin odamlar qullikka olinmagan biron bir hududi ma'lum emas. Qullikdan xoli biron bir yurt mavjudligi haqida ham rivoyat qilinmagan. Islom bu masalaga ikki jihatdan qaradi.

Islam came while slaves existed in all areas of the world, and slavery was a system common in all areas of the world with all people and nations. It is not known of the existence of any area of the earth except that slaves were traded and free persons were enslaved. It is not related about the existence of any land without slavery. Islam viewed that this problem was related to two aspects.

Birinchidan, bu amalda qul qilib olingan kishilar va o'zlarining qadr-qimmatini erkin kishilarning adolatli e'tiboridan tushib qolgan, boshqa mollar kabi sotiladigan, sotib olinadigan va narxi ustida savdolashiladigan mol sifatida qaraladigan kishilarga tegishli edi. Shuning uchun bu qullarni ozod qilishga va ularni erkin insonlarga aylantirishga olib keladigan davolash choralarini ko'rish zarur edi. Ikkinchi jihatga kelsak, u qullikka tegishli edi. Qullikni cheklashga qaratilgan davolash choralarini ko'rish zarur. Shunday qilib, insoniyatning haqiqati va uning alohida shaxslari hamda xalqlari o'rtasidagi munosabatlarning haqiqatiga asoslangan, inson uchun foydali davolash bilan bu ikki jihatni hal qiluvchi oyatlar va hadislar paydo bo'ldi.

Firstly, it was related to the slaves who had been enslaved in practice and those whose consideration had fallen from the upright consideration of others who were free and were considered as goods like other goods sold and bought and bargained over. So it was necessary to treat with a treatment resulting in freeing these slaves and making them free persons. As for the second aspect, it related to slavery. It is necessary to treat it with a treatment placing a limit on slavery. Hence there came ayaat and ahadith treating these two aspects with a beneficial treatment for mankind based upon the reality of mankind and the reality of the relationships existing between its individuals and nations.