The Sufficient (Vol 5) · Hadith 1087 (#Ḥadīth #3)
Chapter 141 | Brokerage and Brokerage Fees
3- أَحْمَدُ بْنُ مُحَمَّدٍ عَنِ ابْنِ أَبِي عُمَيْرٍ عَنْ بَعْضِ أَصْحَابِنَا مِنْ أَصْحَابِ الرَّقِيقِ قَالَ اشْتَرَيْتُ لأبِي عَبْدِ اللهِ جَارِيَةً فَنَاوَلَنِي أَرْبَعَةَ دَنَانِيرَ فَأَبَيْتُ فَقَالَ لَتَأْخُذَنَّ فَأَخَذْتُهَا وَقَالَ لا تَأْخُذْ مِنَ الْبَائِعِ.
3. Ahmad ibn Muhammad has narrated from Ibn Abi ‘Umayr from certain persons of our people of slave traders who has said the following: “I once bought a slave-girl for abu ‘Abd Allah , and he (the Imam) gave me four dinars but I declined. He (the Imam) said, ‘You must take it’ and I took it and he (the Imam) said, ‘You must not take anything from the seller.’”
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).