ENOfficial
Uqbah ibn Amir reported: “The Messenger of Allah (ﷺ) commanded me to recite the Mu'awwidhaat after every prayer.” Reference: Sunan Abi Dawud 1523, Sunan an-Nasa'i 1336.
Source: sunnah.com
Other translations
Arabic
عَنْ عُقْبَةَ بْنِ عَامِرٍ، قَالَ أَمَرَنِي رَسُولُ اللَّهِ صلى الله عليه وسلم أَنْ أَقْرَأَ بِالْمُعَوِّذَاتِ دُبُرَ كُلِّ صَلاَةٍ .
sunnah.com