This Hadith means that neighbours should present gifts to each other. The rich men and the poor according to their means. One who is poor should not think that what he is presenting to his neighbour is not worthy of giving. Even his humble gift, provided it is presented with sincerity, will find acceptance with Allah. According to the Noble Qur'an: "So whosoever does good equal to the weight of an ant (or a small ant) shall see it." (99:7)
It is, however, better for a rich person to present a gift which goes well with his means. He should not give anything to his neighbour which is stale or which he does not like for himself because apart from insincerity, such a thing shows his contempt for the neighbour while gift is, in fact, a token of sincerity and brotherhood.