Sayyiduna Jabir (may Allah be pleased with him) said that the Prophet (peace and blessings be upon him) bought something from a Bedouin — (I think it was Abu al-Zubayr who) said he was from Banu Amir bin Sa'sa'ah — he bought a load of leaves. When the sale became binding, the Prophet (peace and blessings be upon him) said: "You have the option." The Bedouin said: I have never seen a buyer who was also more understanding than you. From which tribe are you? He (peace and blessings be upon him) said: "From Quraysh."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب البيوع / 10442