Obligatory Charity Tax (Zakat)
حَدَّثَنَا مُسْلِمٌ، حَدَّثَنَا شُعْبَةُ، حَدَّثَنَا عَدِيٌّ، عَنْ سَعِيدِ بْنِ جُبَيْرٍ، عَنِ ابْنِ عَبَّاسٍ ـ رضى الله عنهما ـ قَالَ خَرَجَ النَّبِيُّ صلى الله عليه وسلم يَوْمَ عِيدٍ فَصَلَّى رَكْعَتَيْنِ لَمْ يُصَلِّ قَبْلُ وَلاَ بَعْدُ، ثُمَّ مَالَ عَلَى النِّسَاءِ وَمَعَهُ بِلاَلٌ، فَوَعَظَهُنَّ وَأَمَرَهُنَّ أَنْ يَتَصَدَّقْنَ، فَجَعَلَتِ الْمَرْأَةُ تُلْقِي الْقُلْبَ وَالْخُرْصَ.Narrated Ibn `Abbas:The Prophet (ﷺ) went out for the `Id prayer on the `Id day and offered a two rak`at prayer; and he neither offered a prayer before it or after it. Then he went towards the women along with Bilal. He preached them and ordered them to give in charity. And some (amongst the women) started giving their forearm bangles and earrings
From Sahih al-Bukhari, whose reports the scholars accept as authentic.