Sri Shankara, both in his commentaries and in his shorter works, often writes that the body and mind are symptoms (or effects) of ignorance, and when ignorance goes, the symptoms or effects of ignorance also go.

He also writes that the body, mind and world can never have any connection whatsoever with What You Truly Are, the Self, Pure Consciousness – and that only through ignorance can a connection between the two appear to be there.

eg. In Vivekachudamani Shankara writes:

195. But for delusion there can be no connection of the Self – which is unattached, beyond activity and formless – with the objective world, as in the case of blueness etc., with reference to the sky.

196. The Jivahood of the Atman, the Witness, which is beyond qualities and beyond activity, and which is realised within as Knowledge and Bliss Absolute – has been superimposed by the delusion of the Buddhi, and is not real. And because it is by nature an unreality, it ceases to exist when the delusion is gone.

197. It exists only so long as the delusion lasts, being caused by indiscrimination due to an illusion. The rope is supposed to be the snake only so long as the mistake lasts, and there is no more snake when the illusion has vanished. Similar is the case here.

198-199. Avidya or Nescience and its effects are likewise considered as beginningless. But with the rise of Vidya or realisation, the entire effects of Avidya, even though beginningless, are destroyed together with their root – like dreams on waking up from sleep. It is clear that the phenomenal universe, even though without beginning, is not eternal – like previous non-existence.

200-201. Previous non-existence, even though beginningless, is observed to have an end. So the Jivahood which is imagined to be in the Atman through its relation with superimposed attributes such as the Buddhi, is not real; whereas the other (the Atman) is essentially different from it. The relation between the Atman and the Buddhi is due to a false knowledge.

202. The cessation of that superimposition takes place through perfect knowledge, and by no other means. Perfect knowledge, according to the Shrutis, consists in the realisation of the identity of the individual soul and Brahman.

205. When the unreal ceases to exist, this very individual soul is definitely realised as the eternal Self. Therefore one must make it a point completely to remove things like egoism from the eternal Self.

Here Sri Nisargadatta also says the same: