Sahih Muslim , Hadith 1368 ⓘ
Anas b. Malik (Allah be pleased with him) reported that Allah's Messenger said: Allah bless them in their measurements, bless them in their sa's and bless them in their mudd.
حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، عَنْ مَالِكِ بْنِ أَنَسٍ، فِيمَا قُرِئَ عَلَيْهِ عَنْ إِسْحَاقَ بْنِ عَبْدِ، اللَّهِ بْنِ أَبِي طَلْحَةَ عَنْ أَنَسِ بْنِ مَالِكٍ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " اللَّهُمَّ بَارِكْ لَهُمْ فِي مِكْيَالِهِمْ وَبَارِكْ لَهُمْ فِي صَاعِهِمْ وَبَارِكْ لَهُمْ فِي مُدِّهِمْ " .
also referenced under: Book 15, Hadith 529 (In-Book) & Book 7, Hadith 3161 (USC-MSA)