Ibn 'Abbas gave a Khutbah in Al-Basrah and said: "Pay the zakah of your fasting." The people started looking at one another. He said: "Whoever there is here from the people of Al-Madinah, get up and teach your brothers, for they do not know that the Messenger of Allah ﷺ enjoined sadaqat al-fitr on the young and the old, the free and the slave, the male and the female; half a sa' of wheat or a sa' of dried dates or barley.'" (Using translation from Nasāʾī 1580)
يَا أَهْلَ الْبَصْرَةِ أَدُّوا زَكَاةَ صَوْمِكُمْ قَالَ فَجَعَلَ النَّاسُ يَنْظُرُ بَعْضُهُمْ إِلَى بَعْضٍ فَقَالَ مَنْ هَاهُنَا مِنْ أَهْلِ الْمَدِينَةِ؟ قُومُوا فَعَلِّمُوا إِخْوَانَكُمْ فَإِنَّهُمْ لَا يَعْلَمُونَ أَنَّ رَسُولَ اللهِ ﷺ فَرَضَ صَدَقَةَ رَمَضَانَ نِصْفَ صَاعٍ مِنْ بُرٍّ أَوْ صَاعًا مِنْ شَعِيرٍ أَوْ صَاعًا مِنْ تَمْرٍ عَلَى الْعَبْدِ وَالْحُرِّ وَالذَّكَرِ وَالْأُنْثَى