Abu Sa'id al-Khudri said

While we were on a journey with Allah's Messenger ﷺ a man came on a riding beast and began to turn right and left,* whereupon Allah's Messenger ﷺ said, “He who has an extra mount should lend it to him who has none, and he who has extra provision should give it to him who has none.” He said that he mentioned various kinds of property till they began to think none of them had a right to anything extra. * The camel was evidently tired, and the man seems to have been looking around to see whether he could get any help. Another suggestion is that the man was walking with his goods loaded on the camel, but the wording hardly supports this. Cf. Mirqat, iv, 213 f. Muslim transmitted it.