Patanjali Yog Sutras

patanjali yoga sutra
samadhipad
Sutra 3

sutra 3 tada drashtuh swaroope awasthanam
tada drashtuh swaroope awasthanam

Translation: then the seer/atma (drashta) has its state (awastha) in its own form (swaroop)

AVIDYA is banished and the seer becomes you and you become the seer. Duality, which is caused due to imperfections, vanishes and all become one - the reality, which is one but is known differently due to avidya.