(11) باب إِذَا أُسِرَ أَخُو الرَّجُلِ أَوْ عَمُّهُ هَلْ يُفَادَى إِذَا كَانَ مُشْرِكًا
Narrated Anas:
Some men of the Ansar asked for the permission of Allah's Messenger (ﷺ) and said, "Allow us to give up the ransom from our nephew Al-`Abbas. The Prophet (ﷺ) said (to them), "Do not leave (even) a Dirham (of his ransom).
Reference: Sahih al-Bukhari 2537
In-book reference: Book 49, Hadith 22
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 3, Book 46, Hadith 714