The religious innovation of reciting al-Fatihah at the end of supplication or at the beginning of sermons and occasions.

Some people today have introduced a religious innovation regarding this surah; they have started concluding their supplications with it and beginning their sermons or occasions with it. This is an error. For example, you will find that if someone supplicates, then supplicates, then supplicates again, he says after that: al-Fatihah. What is the connection of al-Fatihah? Where did this come from? Or some people begin with it in their sermons or in their occasions, and this is also an error, because acts of worship are based on restriction and following [the Prophet].