Wuquf
Wuquf (Arabic: وقوف; meaning “standing”) is the act of being present, even for a moment, at a particular place during Hajj. The Wuquf at Arafat on the 9th of Dhul Hijjah is an integral rite of Hajj and its non-performance invalidates the entire pilgrimage. The Wuquf at Muzdalifah performed after Fajr on the 10th of Dhul Hijjah, just before leaving for Mina, is regarded as a sunnah.