Sales and trade of slaves information needed

[Affan Khan]

Aslaam walaikum can anyone give me detailed information regarding sales and trade of slaves in islamic societies and rulings regarding that.
Because the hadith where Prophet Muhmaad ( sws ) traded 2 black slaves in exchange of muslim slave is taken by critics.

[AMuslimDude213]

I've never heard of such a hadith,but if it was there,it would be the same ruling as to any other slave
1:Treat him well,treat him with kindness as if he is your family
2:Free him
or
3:Get humiliated for keeping him un-justly.

[Affan Khan]

Can we sell slave to non muslims

[AMuslimDude213]

No I donot think we can sell slaves to non-Muslims since they kill the Slave's usually after having sexual relations with them,Non-Muslim were among the worst slave-owning people,they used to SODOMIZE their slaves too!,

[submit]

Non muslims will purchase the freedom of their men captured thru wars.
Muslims will also free as many slaves under custody of non muslims that converted to Islam or those Muslims captured in wars by purchasing their freedom.

[Affan Khan]

No actually there is a hadith in sahih bukhari book of sales and trade where prophet Muhmaad ( sws ) exchanged muslim slave for 2 black slave i think it's exceptional case because after that he didn't took allegiance from anyone before asking they where slaves or not