Why golems and avatara in Mausoleum didn't attack lord Momon?

2017-11-24 15:34:05

In chapter 12 lord Ains (Momon) tells Albedo to

hand over her ring to Pandora's actor because the golems and avatara will automatically attack anyone wearing the ring.

I don't understand why they didn't attack lord Ains himself and how can this improve security. ?