I asked Anas, "Did the Messenger of Allah ﷺ perform the qunut in the dawn prayer?"He replied, "Yes, briefly after the bowing."
قلت لأنس: هل قنت رسول الله ﷺ الصبح؟ قال: نعم، بعد الركوع يسيرا.
Bukhari narrated it in the chapter on Witr (1001), and Muslim in the chapter on mosques (298/677), both from the hadith of Ayub, from Muhammad bin Sirin, with the same wording. His statement, "briefly," means a few days, as Asim clarified in his coming narration.