وَحَدَّثَنِي مَالِكٌ، عَنْ يَحْيَى بْنِ سَعِيدٍ، أَنَّهُ سَمِعَ سَعِيدَ بْنَ الْمُسَيَّبِ، يَقُولُ إِذَا جِئْتَ أَرْضًا يُوفُونَ الْمِكْيَالَ وَالْمِيزَانَ فَأَطِلِ الْمُقَامَ بِهَا وَإِذَا جِئْتَ أَرْضًا يُنَقِّصُونَ الْمِكْيَالَ وَالْمِيزَانَ فَأَقْلِلِ الْمُقَامَ بِهَا .
Malik related to me that Yahya ibn Said heard Said ibn al-Musayyab say, "When you come to a land where they give full measureand full weight, stay there. When you come to a land where theyshorten the measure and weight, then do not stay there very long." Translation Not Available
Book Ref: Muwatta Imam Malik Book 31 Hadith 1386
Web Ref: Muwatta Imam Malik Book 31 Hadith 100