"Give Zakah of your fast." The people looked at one another, so he said: "Whoever is here from the people of Al-Madinah, get up and teach your brothers, for they do lnot know that this Zakah was enjoined by the Messenger of Allah upon every male and female, free and slave, a Sa' of barley or dates, or half a Sa' of wheat. "So they got up. (Da'if) Hisham contradicted him, he said: "From Muhammad bin Sirin." (Using translation from Nasāʾī 2508)  

مَنْ هَاهُنَا مِنْ أَهْلِ الْمَدِينَةِ؟ قُومُوا فَعَلِّمُوا إِخْوَانَكُمْ فَإِنَّهُمْ لَا يَعْلَمُونَ «أَنَّ هَذِهِ الزَّكَاةَ فَرَضَهَا رَسُولُ اللهِ ﷺ عَلَى كُلِّ ذَكَرٍ وَأُنْثَى حُرٍّ وَمَمْلُوكٍ صَاعًا مِنْ شَعِيرٍ أَوْ تَمْرٍ أَوْ نِصْفَ صَاعٍ مِنْ قَمْحٍ» خَالَفَهُ هِشَامٌ عَنْ مُحَمَّدِ بْنِ سِيرِينَ