Is it permissible to add to the formula of the salam before completing the prescribed formula of the salam?

The questioner : Regarding the salam, to engage in what is prescribed before completing what is prescribed, by saying "As-salamu alaykum wa rahmatullahi wa barakatuh" and then adding "and His forgiveness and His blessings," meaning he retains the

The Shaykh : meaning he omits what is prescribed and brings in something else.

The questioner : First.

The Shaykh : No, the best is to adhere to what is prescribed in everything, and then the addition comes after it. This is the best in this, in supplication, in the remembrance of Allah, and in everything.