Sunan an Nasai
5434
Sahih+2

It was narrated from 'Uqbah bin 'Amir that :He asked the Messenger of Allah [SAW] about Al-Mu'awwidhatain. 'Uqbah said: "The Messenger of Allah [SAW] recited them when he led us in Salah Al-Ghadah (As-Subh)

SahihAbu Ghuddah
SahihAl-Albani