ذِكْرُ الْإِخْبَارِ بِأَنَّ الصَّاعَ صَاعُ أَهْلِ الْمَدِينَةِ دُونَ مَا أُحْدِثَ مِنَ الصِّيعَانِ بَعْدَهُ
"The Messenger of Allah said: "Volume is to be measured according to the system of the people of Al-Madinah, and weight is to be measured according to the system of the peole of Makkah."' (Sahih) This is the wording of Ishaq (one of the narrators). (Using translation from Nasāʾī 4594)
قَالَ رَسُولُ اللَّهِ ﷺ «الْوَزْنُ وَزْنُ مَكَّةَ وَالْمِكْيَالُ مِكْيَالُ أَهْلِ الْمَدِينَةِ»