viṣayān indriyaiś caran
It is already explained that one may externally control the senses by some artiﬁcial process, but unless the senses are engaged in the transcendental service of the Lord, there is every chance of a fall. Although the person in full Kṛṣṇa consciousness may apparently be on the sensual plane, because of his being Kṛṣṇa conscious he has no attachment to sensual activities. The Kṛṣṇa conscious person is concerned only with the satisfaction of Kṛṣṇa, and nothing else. Therefore he is transcendental to all attachment and detachment. If Kṛṣṇa wants, the devotee can do anything which is ordinarily undesirable; and if Kṛṣṇa does not want, he shall not do that which he would have ordinarily done for his own satisfaction. Therefore to act or not to act is within his control because he acts only under the direction of Kṛṣṇa. This consciousness is the causeless mercy of the Lord, which the devotee can achieve in spite of his being attached to the sensual platform.