أَخْبَرَنَا أَحْمَدُ بْنُ سُلَيْمَانَ، قَالَ حَدَّثَنَا أَبُو نُعَيْمٍ، قَالَ حَدَّثَنَا سُفْيَانُ، عَنْ حَنْظَلَةَ، عَنْ طَاوُسٍ، عَنِ ابْنِ عُمَرَ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " الْمِكْيَالُ مِكْيَالُ أَهْلِ الْمَدِينَةِ وَالْوَزْنُ وَزْنُ أَهْلِ مَكَّةَ " .
It was narrated from Ibn 'Umar that the Prophet (PBUH) said: "The measure (to be used) is themeasure of the people of Al-Madinah, and the weight (to be used) is the weight of the people of Makkah." Translation Not Available
Book Ref: Sunan An Nisai Book 23 Hadith 2520
Web Ref: Sunan An Nisai Vol 1 Book 3 Hadith 2521