Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi)
حَدَّثَنِي إِبْرَاهِيمُ بْنُ الْمُنْذِرِ، حَدَّثَنَا مُحَمَّدُ بْنُ فُلَيْحٍ، عَنْ مُوسَى بْنِ عُقْبَةَ، قَالَ ابْنُ شِهَابٍ حَدَّثَنَا أَنَسُ بْنُ مَالِكٍ، أَنَّ رِجَالاً، مِنَ الأَنْصَارِ اسْتَأْذَنُوا رَسُولَ اللَّهِ صلى الله عليه وسلم فَقَالُوا ائْذَنْ لَنَا فَلْنَتْرُكْ لاِبْنِ أُخْتِنَا عَبَّاسٍ فِدَاءَهُ. قَالَ " وَاللَّهِ لاَ تَذَرُونَ مِنْهُ دِرْهَمًا ".Narrated Anas bin Malik:Some men of the Ansar requested Allah's Messenger (ﷺ) to allow them to see him, they said, "Allow us to forgive the ransom of our sister's son, `Abbas." The Prophet (ﷺ) said, "By Allah, you will not leave a single Dirham of it
From Sahih al-Bukhari, whose reports the scholars accept as authentic.