(45) بَابُ مَنِ احْتَبَسَ فَرَسًا لِقَوْلِهِ تَعَالَى: {وَمِنْ رِبَاطِ الْخَيْلِ}
Narrated Abu Huraira:
The Prophet (ﷺ) said, "If somebody keeps a horse in Allah's Cause motivated by his faith in Allah and his belief in His Promise, then he will be rewarded on the Day of Resurrection for what the horse has eaten or drunk and for its dung and urine."
Reference: Sahih al-Bukhari 2853
In-book reference: Book 56, Hadith 69
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 4, Book 52, Hadith 105