Prakruti-Purush can be considered unchangeable and gruhasthas can also be considered unchangeable. And according to the principle of Sānkhya and gnān, they can be considered detached.1 Footnotes: 1. 1. Swami’s purport is to explain that, although Mul-Purush (an akshar-mukta of Akshardham) joins with Mul-Prakruti to start the creation process, he still remains detached from māyā. Similarly, even though gruhasthas have the association of māyā in their worldly path, because of their association with the Aksharbrahman Satpurush and their sānkhya gnān and gnān of Purushottam Bhagwan, they are also kutastha - something that is unchangeable or eternal.