The meaning of saying is that far from favoring one of the mother or wife, even if she speaks something, she is in difficulty to fall. Now how to strike a balance between mother and wife? When a person reached the meeting of spiritual guru Sri Sri Ravi Shankar with this question, Gurudev told the solution of his problem in a very funny way.
Gurudev Sri Sri Ravi Shankar jokingly said that if you want to strike a balance between mother and wife, then never stand between the two. Let them do their own tinkering. Don't fall in the middle. Whatever is happening, watch it quietly, because if you favor one, you will definitely be in trouble. Moreover, even if you do not favor anyone, you are bound to get into trouble. I believe that you must have the skill to deal with it. You should pray to God to give you this skill.