As discussed in this question’s comment section
It is clear that the recital of (deity specific) mantras are not ”sanctioned”(I don’t know what implications follow if someone does recite without Deeksha,I am quoting another user’s words) for uninitiated individuals.
So then,who is the person who gave the original/initial Diksha?The one whose disciples later passed down the Diksha to others,and who Himself/Herself,did not require Deeksha?