What is the interpretation of the hadith: “Indeed, a group of people will be dragged into Paradise by their chains…”?

The questioner : Regarding the interpretation of the hadith ?

The Shaykh : Its interpretation is what occurred in the early eras, when many disbelieving captives came to the lands of the Muslims, bound in shackles as slaves and bondsmen. After they were enslaved, and due to this enslavement, they served their masters and those who took them in, and they became aware of some of the morals and beliefs of the Muslims, which had been hidden from them. They found that the morals they had learned, and the good treatment of their slaves and bondsmen, was contrary to what they knew in their own lands regarding the mistreatment of slaves and bondsmen by their masters… [They turned] to Islam and entered it in large numbers. Many of them, due to the wonderful Islamic system, which was unique at that time in legislating what is known in the books of hadith and jurisprudence as mukatabah (a contract of manumission), in addition to the freeing of slaves mentioned in the Qur'an, which Islam encouraged.