Sunan Abi Dawud 1610
سنن أبي داود#1610SahihIbn ‘Umar said :The Messenger of Allah(ﷺ) commanded us that the end of Ramadan when the fasting is closed sadaqah(alms) should be paid before the people went to prayer. ‘Abd Allah b. ‘Umar used to pay it one or two days before
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih Bukhari (1509) Sahih Muslim (986)
In-book reference: 9:55