From Sahih Muslim (Hadith 1024):
Qutba b. Malik reported:I said prayer and the Messenger of Allah (ﷺ) led it and he recited" Qaf. (I.). By the Glorious Qur'an," till he recited" and the tall palm trees" (l. 10). I wanted to repeat it but I could not follow its significance
Reference: Muslim 1024