Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) narrates: The Noble Prophet (peace and blessings be upon him) said: "Whoever stands at Arafat during the night has attained Hajj, and whoever was not able to stand at Arafat during the night, his Hajj will be considered missed, so he should enter into the state of Ihram for Umrah, and now Hajj will be obligatory upon him the following year." The narrator named Rahmat bin Mus'ab is weak, and no one else has narrated this narration except him.