Isn't keeping the idol-murtis or pictures, etc., of non canonical deities (like Saî Bâbâ, Santoșhî Mâtâ) in the temples dedicated to scripture defined canonical deities, a sin or a forbidden act?
These days we can see murtis or images of several non-canonical deities in the temples dedicated specifically to canonical deities.
For instance: Puri Mațh's Shankarâchârya Nischalananda says something very similar in this video starting at 2:45 minutes.
What does scriptures say on this phenomenon, which at present is very prevelant?