। ॥ १५१ ॥
In plain words
When the sheer weight of non-dual bliss makes the questions go slack — What is this? Who am I? And whose am I? — at that moment the mind has fainted away.
Close to the Sanskrit
When, from the fullness of non-dual bliss, the mind has gone to sluggishness regarding "What is this? Who am I? And whose am I?" — then the mind has swooned.