It wasnarrated that Tamim Ad-Dari said:
"I heard the Messenger ofAllah(ﷺ) say: 'Whoever ties a horse in the cause of Allah, thenfeedsit with his own hand, he will have one merit for every grain.'" (ID)
English reference (ID): Vol. 4, Book 24, Hadith 2791 (ID)
Arabic reference (ID): Book 24, Hadith 2897 (ID)