Musannaf Ibn Abi Shaybah 24710 — Appointing a representative

It is narrated from Sayyiduna Abdullah bin Ja'far (may Allah be pleased with him) that Sayyiduna Ali (may Allah be pleased with him) would not attend disputes, and he used to say: "They contain perils at which Satan is present." So he entrusted his disputes to Sayyiduna Aqil (may Allah be pleased with him), and when he became old and frail, he transferred them to me. Sayyiduna Ali (may Allah be pleased with him) used to say: "Whatever judgment is given in favour of my agent is in my favour, and whatever judgment is given against my agent is against me."