The Sufficient (Vol 5) · Hadith 500 (#Ḥadīth #14)
Chapter 54 | Etiquettes of Doing Business
14- أَحْمَدُ عَنْ مُحَمَّدِ بْنِ عَلِيٍّ عَنْ أَبِي جَمِيلَةَ عَنْ إِسْحَاقَ بْنِ عَمَّارٍ عَنْ أَبِي عَبْدِ اللهِ قَالَ غَبْنُ الْمُسْتَرْسِلِ سُحْتٌ.
14. Ahmad ibn Muhammad ibn Ali has narrated from abu Jamilah from Ishaq ibn ‘Ammar who has said the following: “Abu ‘Abd Allah , has said, ‘Selling above a fair price to one who has left it (pricing) to the seller is Suht (unlawful and filthy).’”
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).