حَدَّثَنَا وَكِيعٌ، حَدَّثَنَا هِشَامُ بْنُ سَعْدٍ، عَنْ زَيْدِ بْنِ أَسْلَمَ، عَنْ أَبِيهِ، عَنْ عُمَرَ
رَضِيَ اللَّهُ عَنْهُ أَنَّهُ وَجَدَ فَرَسًا كَانَ حَمَلَ عَلَيْهَا فِي سَبِيلِ اللَّهِ تُبَاعُ فِي السُّوقِ فَأَرَادَ أَنْ يَشْتَرِيَهَا فَسَأَلَ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَنَهَاهُ وَقَالَ: لَا تَعُودَنَّ فِي صَدَقَتِكَ
He found a horse that he had given to someone (for jihad) for the sake of Allah being offered for sale in the marketplace, and he wanted to buy it. He asked the Prophet (sallallahu alayhi wa sallam) and he told him not to do that and said: “Do not take back your charity.”.
Musnad Ahmad 249, Book 2, Musnad `Umar b. al-Khattab (ra), Hadith 172. 1 min read