fiqhsalatsalat-ala-nabidua
After the tashahhud, one may pray upon the Prophet ﷺ with any known formula, then supplicate: forgiveness for oneself and one's parents, every good the Prophet ﷺ asked for, "Our Lord, give us good in this world…", and refuge from the trials of life and death, the grave and the false Messiah. It is recommended, not obligatory.