Musnad Abu Ya'la al-Mawsili 113:4

Abu al-Rabi' al-Zahrani narrated to us, Hammad narrated to us, from Ayyub, from Abu Qilabah, from Anas: He said: The Prophet (ﷺ) prayed Dhuhr in Medina as four units, and he prayed at Dhu al-Hulayfah as two units. I heard them shouting with them, shouting for Hajj and Umrah.