Hadith 2971 - Fighting for the Cause of Allah (Jihaad) - Sahih Al-Bukhari - صحيح البخاري - Collection of Actions, Sayings and Teachings of Prophet Muhammad (صلى الله عليه و سلم) - Kutub as-Sittah

56. Fighting for the Cause of Allah (Jihaad) - كتاب الجهاد والسير

119) Chapter: The wages given to fight on somebody else's behalf

Narrated `Abdullah bin `Umar:

`Umar gave a horse to be used in Allah's Cause, but later on he found it being sold. So, he intended to buy it and asked Allah's Messenger (ﷺ) who said, "Don't buy it and don't take back your gift of charity."

Reference: 2971
English reference: Vol. 4, Book 52, Hadith 215
In-book reference: Book 56, Hadith 180
Grade: Sahih
Read this hadith from Darussalam Collection

119) باب الْجَعَائِلِ وَالْحُمْلاَنِ فِي السَّبِيلِ

حَدَّثَنَا إِسْمَاعِيلُ، قَالَ حَدَّثَنِي مَالِكٌ، عَنْ نَافِعٍ، عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ ـ رضى الله عنهما أَنَّ عُمَرَ بْنَ الْخَطَّابِ، حَمَلَ عَلَى فَرَسٍ فِي سَبِيلِ اللَّهِ، فَوَجَدَهُ يُبَاعُ، فَأَرَادَ أَنْ يَبْتَاعَهُ، فَسَأَلَ رَسُولَ اللَّهِ صلى الله عليه وسلم فَقَالَ ‏‏‏.‏ "‏ لاَ تَبْتَعْهُ، وَلاَ تَعُدْ فِي صَدَقَتِكَ ‏"