١٨- مُحَمَّدُ بْنُ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدِ بْنِ عِيسَى رَفَعَ الْحَدِيثَ قَالَ كَانَ أَبُو أُمَامَةَ صَاحِبُ رَسُولِ اللهِ (صَلَّى اللهُ عَلَيْهِ وَآلِه) يَقُولُ سَمِعْتُ رَسُولَ اللهِ (صَلَّى اللهُ عَلَيْهِ وَآلِه) يَقُولُ أَرْبَعٌ مَنْ كُنَّ فِيهِ فَقَدْ طَابَ مَكْسَبُهُ إِذَا اشْتَرَى لَمْ يَعِبْ وَإِذَا بَاعَ لَمْ يَحْمَدْ وَلا يُدَلِّسُ وَفِيمَا بَيْنَ ذَلِكَ لا يَحْلِفُ.
18. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad ibn ‘Isa in a marfu’ manner’ has said the following: “Abu ’Amamah, a companion of the Messenger of Allah, O Allah, grant compensation to Muhammad and his family worthy of their services to Your cause, has said, ‘I heard the Messenger of Allah saying, “One who has four things his earning is fine: When buying does not belittle the merchandise, when selling does not admire the merchandise, does not adulterate and in between does not swear.’”” 