question #1 Sahih al-Bukhari 3002, Book 56, Hadith 211 : What guidance does Islam provide regarding the act of taking back a gift once it has been given?

`Umar bin Al-Khattab gave a horse to be ridden in Allah’s Cause and then he found it being sold. He
intended to purchase it. So, he consulted Allah’s Messenger (ﷺ) who said, “Don’t buy it and don’t take back
your gift of charity.”