Musannaf Ibn Abi Shaybah 32985 — Those who used to make bequests

Ikrimah reported that Sayyiduna Ibn Abbas (may Allah be pleased with them both) said: "Causing harm to someone in a bequest is one of the major sins." Then he recited: "And whoever disobeys Allah and His Messenger and transgresses His limits, He will admit him to a Fire, abiding therein" [Al-Nisa: 14].