Quran 3:7 states that certain ayas are allegorical (mutashâbihât) and others are literal (muhkamât):
003.007 He it is Who has sent down to thee the Book: In it are verses basic or fundamental (of established meaning); they are the foundation of the Book: others are allegorical. But those in whose hearts is perversity follow the part thereof that is allegorical, seeking discord, and searching for its hidden meanings, but no one knows its hidden meanings except Allah. And those who are firmly grounded in knowledge say: "We believe in the Book; the whole of it is from our Lord:" and none will grasp the Message except men of understanding."
I was trying to interpret some allegorical ayas when I read this surah and the level of understanding requirement.
What is the benchmark or threshold of this qualification if it exists?