From "Knowing and Seeing" which is a collection of talks by Pa Auk Sayadow:

Question 7.15 Is the seeing mind that sees mentality-materiality itself included
in mentality-materiality? Is it included in wisdom?

Answer 7.15 Yes, it is. You can see it at all the stages of vipassana, especially
at the stage of Dissolution Knowledge (BhaAga·ÑaBa). It says in the
Visuddhi·Magga:458