It was narrated from Az-Zuhri he said:
"Anas told me that the Messenger of Allah (ﷺ) went out when the sun had passed its zenith, and led them in Zuhr prayer." (IT)
English reference (IT): Vol. 1, Book 6, Hadith 497 (IT)
Arabic reference (IT): Book 6, Hadith 500 (IT)