From Sahih Bukhari (Hadith 1001):
Narrated Muhammad bin Seereen:Anas was asked, "Did the Prophet (ﷺ) recite Qunut in the Fajr prayer?" Anas replied in the affirmative. He was further asked, "Did he recite Qunut before bowing?" Anas replied, "He recited Qunut after bowing for some time (for one month)
Reference: Bukhari 1001