If you see your brother's ox or sheep straying, do not ignore it but be sure to take it back to him.1
References for Deuteronomy 22:1
If the brother does not live near you or if you do not know who he is, take it home with you and keep it until he comes looking for it. Then give it back to him.
Do the same if you find your brother's donkey or his cloak or anything he loses. Do not ignore it.
If you see your brother's donkey2 or his ox fallen on the road, do not ignore it. Help him get it to its feet.3
References for Deuteronomy 22:4