If the brother or the uncle of somebody was taken as to ransom a Mushrik

Narrated Anas:

Some men of the Ansar asked for the permission of Allah's Apostle 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)."

حَدَّثَنَا إِسْمَاعِيلُ بْنُ عَبْدِ اللَّهِ، حَدَّثَنَا إِسْمَاعِيلُ بْنُ إِبْرَاهِيمَ بْنِ عُقْبَةَ، عَنْ مُوسَى، عَنِ ابْنِ شِهَابٍ، قَالَ حَدَّثَنِي أَنَسٌ ـ رضى الله عنه ـ أَنَّ رِجَالاً، مِنَ الأَنْصَارِ اسْتَأْذَنُوا رَسُولَ اللَّهِ ﷺ فَقَالُوا ائْذَنْ فَلْنَتْرُكْ لاِبْنِ أُخْتِنَا عَبَّاسٍ فِدَاءَهُ، فَقَالَ " لاَ تَدَعُونَ مِنْهُ دِرْهَمًا ".