There is goodness in the forelocks of horses till the Day of Resurrection.

Whoever dedicated a horse in the cause of Allah out of faith in Allah and believing in the fulfillment of Allah’s promise; its satiety of food and water, urine, and dung will be good deeds in his balance on the Day of Resurrection.

Goodness is bound to forelocks of horses: reward and spoils until the Day of Resurrection.