Musannaf Ibn Abi Shaybah 36032 — The affair of al-Qadisiyyah

Al-Nu'man bin Humayd said: Sayyiduna Ammar (may Allah be pleased with him) obtained some spoils of war and distributed part of them. Then he wrote to Sayyiduna Umar (may Allah be pleased with him) to apologise and to seek his counsel. He said: "Let the people trade with one another until the rider arrives."