Abdur Rahman bin 'Amr al-Awza'i عبد الرحمن بن عمرو أبو عمرو الأوزاعي · Chapters on Hajj Rituals

It was narrated from Ibn ‘Umar that when the Messenger of Allah (ﷺ) put his foot in the stirrup and his riding beast rose up with him, he would say the Talbiyah from the mosque of Dhul-Hulaifah.

“Hajj is Jihad and ‘Umrah is voluntary.”