Nafi’ (may Allah have mercy on him) reports that Sayyiduna Ibn Umar (may Allah be pleased with them both) would spend the night at the place of Dhi Tuwa, perform ghusl after dawn, and instruct his companions to perform ghusl as well. He would enter from Thaniyyah ‘Ulya and exit from Thaniyyah Sufla, and he used to mention that the Noble Prophet (peace and blessings be upon him) did the same.