Abu Amir Huzni narrates: Sayyiduna Abu Kabsha Anmari (may Allah be pleased with him) came to him and said: Give me your horse for mating, because I heard the Prophet Muhammad (peace and blessings be upon him) say this: Whoever gives his horse for mating and as a result a horse is born, then that person receives the reward of seventy such horses that are equipped (with saddle, etc.) and given in the way of Allah. And if as a result no horse is born, then he receives the reward of giving one horse loaded with goods in the way of Allah.
Hadith Referenceصحیح ابن حبان / كتاب السير / 4679
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيصحيح - «الصحيحة» (2868).فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده صحيح