Tying up and detaining captives, and the permissibility of releasing them without a ransom

Sahih Muslim · Book 32 · Hadith 1764 a

حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، حَدَّثَنَا لَيْثٌ، عَنْ سَعِيدِ بْنِ أَبِي سَعِيدٍ، أَنَّهُ سَمِعَ أَبَا هُرَيْرَةَ، يَقُولُ بَعَثَ رَسُولُ اللَّهِ صلى الله عليه وسلم خَيْلاً قِبَلَ نَجْدٍ فَجَاءَتْ بِرَجُلٍ مِنْ بَنِي حَنِيفَةَ يُقَالُ لَهُ ثُمَامَةُ بْنُ أُثَالٍ سَيِّدُ أَهْلِ الْيَمَامَةِ ‏.‏ فَرَبَطُوهُ بِسَارِيَةٍ مِنْ سَوَارِي الْمَسْجِدِ فَخَرَجَ …

It has been narrated on the authority of Abu Huraira who said: The Messenger of Allah (ﷺ) sent some horsemen to Najd. They captured a man. He was from the tribe of Banu Hanifa and was called Thumama b. Uthal. He was the…