Sirach 8:10-13

Revised Standard Version Catholic Edition

¹⁰ Do not kindle the coals of a sinner,
    lest you be burned in his flaming fire.
¹¹ Do not get up and leave an insolent fellow,
    lest he lie in ambush against your words.
¹² Do not lend to a man who is stronger than you;
    but if you do lend anything, be as one who has lost it.
¹³ Do not give surety beyond your means,
    but if you give surety, be concerned as one who must pay.