"Jabir (Allah be pleased with him) reported: There came a slave and pledg- ed allegiance to Allah's Apostle (may peace be upon him) on migration; he (the Holy Prophet) did not know that he was a slave. Then there came his master and demanded him back, whereupon Allah's Apostle (may peace be upon him) said: Sell him to me. And he bought him for two black slaves, and he did not afterwards take allegiance from anyone until he had asked him whether he was a slave (or a free man)" - Book 010, Number 3901
I found the above verse/hadith somewhere and whenever I search to find its source, the top pages (except perhaps the first) are from Islamophobic websites that I don't trust, but I can't find it in Quran.com hence I want to know the validity of it.
Which chapter in the Quran is it from? If it's not from the Quran, where is it from?