حَدَّثَنَا عَبْدُ الرَّزَّاقِ أَخْبَرَنَا مَعْمَرٌ عَنِ الزُّهْرِيِّ عَنْ سَالِمٍ عَنِ ابْنِ عُمَرَ أَنَّ عُمَرَ حَمَلَ عَلَى فَرَسٍ لَهُ فِي سَبِيلِ اللَّهِ ثُمَّ رَآهَا تُبَاعُ فَأَرَادَ أَنْ يَشْتَرِيَهَا فَقَالَ لَهُ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ لَا تَعُدْ فِي صَدَقَتِكَ
مسند امام احمد بن حنبل · Hadith 4903
It was narrated from Ibn Umar that 'Umar ibn al-Khattaab donated a horse of his (to be ridden in jihad) for the sake of Allah, then he found it being offered for sale and wanted to buy it. But the Messenger of Allah (PBUH) said to him: "Do not take back your charity."
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020