It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever enters into the state of Ihram for Hajj and Umrah (i.e., intends to perform Qiran Hajj), one Tawaf (it is mentioned in Tirmidhi: and one Sa'i is sufficient, then after Tawaf and Sa'i) he will remain in Ihram until he completes both Hajj and Umrah." (i.e., he will not become halal).