Abu Sa'id Al-Khudri (May Allah be pleased with him) reported

While we were travelling with the Messenger of Allah (ﷺ), a rider came and began to stare on the right and on the left. The Messenger of Allah (ﷺ) said, "He who has an extra mount should hand it over to one who has none, and he who possesses surplus provision, should give it to him who is without provision." He named various kinds of possessions until we began to think (realize) that none of us had any right to anything surplus.

[Muslim].