Musannaf Ibn Abi Shayba 33:371

Muhammad ibn Bishr narrated to us, he said: Mis'ar narrated to us, from 'Awn ibn 'Abd Allah, from Abu al-Darda', who said: "Whoever seeks out faults will be found fault with, and whoever does not prepare patience for the calamities of affairs will be rendered incapable." He said: And Abu al-Darda' said: "If you settle accounts with people, they will settle accounts with you, and if you leave them alone, they will not leave you alone." He said: "So what do you command me?" He said: "Lend from your honor for the day of your poverty."