2 Corinthians 8:13-15, The Inclusive Bible:

This doesn’t mean that by giving relief to others, you ought to make things difficult for yourselves! It’s just a question of balancing what happens to be your surplus now against their present need; one day they may have something to spare that will supply your own need. That is how we strike a balance, as scripture says: “The one who gathered much had no excess, and the one who gathered little did not go short.”