What is Yoga-Nidra?’

Bhaktivinoda Thakura’s translation of Brahma-samhita 5.12, quotes him as saying, “The Supreme Lord’s ecstatic trance in the intrinsic joy of His own self is called yoga-nidra.” (Sri Bhaktivinoda Vani Vaibhava Vol 1, page 181, published by Touchstone Media, no date given)