Sayyiduna Ya'la bin Umayyah (may Allah be pleased with him) said: A man wearing a cloak smeared with khaluq came to the Prophet (peace and blessings be upon him) at al-Ji'ranah, and I was also present there. He said: "I have intended Umrah, and I am wearing this cloak with khaluq on it." The Prophet (peace and blessings be upon him) said: "What would you do in your Hajj?" He said: "I would take off these clothes and wash off the khaluq." He (peace and blessings be upon him) said: "Whatever you do in Hajj, do it in Umrah as well."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 9099