Is it permissible for me to recite Surat Al-Ikhlas in every rak'ah before another surah, following the example of the Companion whose action was approved by the Prophet, peace and blessings be upon him?

Previously, we mentioned what invalidates the prayer and what is disliked in it, such as excessive fiddling, letting garments hang loose (sadl), covering the mouth, spreading the forearms on the ground (iftirash), squatting (iq'aa'), placing hands on the hips, and interlacing fingers.