The Prophet ﷺ called Abu Taybah, who then cupped him. The Prophet ﷺ asked him, "How much is your tax?"He replied, "Three saa."So the Prophet ﷺ reduced one saa from it.
حدثنا عفان حدثنا أبو عوانة حدثنا أبو بشر جعفر بن أبي وحشية عن سليمان بن قيس
دعا النبي ﷺ أبا طيبة فحجمه قال فسأله كم ضريبتك قال ثلاثة آصع قال فوضع عنه صاعا
Its isnad is sahih. It was mentioned previously at and its cross-references.