Weighing goods by the seller or the giver

لِقَوْلِ اللَّهِ تَعَالَى: {وَإِذَا كَالُوهُمْ أَوْ وَزَنُوهُمْ يُخْسِرُونَ} يَعْنِي كَالُوا لَهُمْ وَوَزَنُوا لَهُمْ كَقَوْلِهِ: {يَسْمَعُونَكُمْ} يَسْمَعُونَ لَكُمْ. وَقَالَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «اكْتَالُوا حَتَّى تَسْتَوْفُوا». وَيُذْكَرُ عَنْ عُثْمَانَ رَضِيَ اللَّهُ عَنْهُ أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ لَهُ: «إِذَا بِعْتَ فَكِلْ، وَإِذَا ابْتَعْتَ فَاكْتَلْ».And the Statement of Allah عز وجل: “And when they have to give by measure or weight to (other) men, give less than due.” (V.83:3) The Prophet ﷺ said, “When you receive what you buy by measure, let it be exact full measure.” Narrated ‘Uthman رضي الله عنه that the Prophet ﷺ told him, “If you are the seller, you have to measure, and if you are the buyer, then let the seller measure for you.”