Till we reach a certain stage one has to sift good from the bad, all of which rise in the mind and take only those that are good.
But after that stage the only aim should be mokSha.
Thereafter the conviction should arise this way: “The good things, in the same way as the bad ones, do rise in the mind itself and are experienced only in the mind.
So we should discard even the good ones, as well as the mind which is the basis for all of them and resort to the Atman, the only one thing, whether it is good or bad”.
And it is for this reason, when he talks about the manomaya-kosha, he gives the warning and advice intended for the mumukShu.