٤- مُحَمَّدُ بْنُ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدِ بْنِ عِيسَى عَنْ مُحَمَّدِ بْنِ الْحَسَنِ زَعْلانَ عَنْ أَبِي إِسْمَاعِيلَ رَفَعَهُ عَنْ أَمِيرِ الْمُؤْمِنِينَ (عَلَيْهِ السَّلام) أَنَّهُ كَانَ يَقُولُ إِيَّاكُمْ وَالْحَلْفَ فَإِنَّهُ يُنَفِّقُ السِّلْعَةَ وَيَمْحَقُ الْبَرَكَةَ. 
4. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad ibn Tsa from Muhammad ibn al-Hassan Za’lan from abu Tsma’il; in a marfu’ manner’ has said, the following: “Amir al-Mu’minin , would say, ‘Beware of swearing; it may make a merchandise easily sell, but it destroys the blessings.’” 