Authentic
graded by Al-Albani
Mishkat al-Masabih 3866
وَعَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: (الْبَرَكَةُ فِي نَوَاصِي الْخَيل)
He reported God’s Messenger as saying, “Blessing rests on the forelocks of the horses.” (Bukhari and Muslim.)
Cited in Mishkat al-Masabih (No. 3866).