Sahih Muslim Book 4, Hadith Number 922.

Chapter : Recitation in noon and afternoon prayers.

Ziyad b. ‘Ilaqa reported it on the authority of his uncle that he said the morning prayer with the Apostle of Allah (may peace be upon him) and he recited in the first rak’ah: “And the tall palm trees having flower spikes piled one above another (l. 10) or perhaps Sarah Qaf.