Sayyiduna Ibn Abbas (may Allah be pleased with them both) said: The Companions said: O Messenger of Allah, our horses have trampled some children from among the children of the polytheists. So the Messenger of Allah (peace and blessings be upon him) said: "They are of their fathers."
Hadith Referenceالمعجم الكبير للطبراني / باب الصاد / 7418