It was narrated that Ibn 'Abbas (رضي الله عنه) said:

Whoever comes for Hajj, circumambulates the House and goes between as-Safa and al-Marwah, it is no longer Hajj; rather it becomes ‘Umrah. That was the Sunnah of Allah, may He be glorified and exalted, and the Sunnah of His Messenger (ﷺ).