The purification of the body is for removing bad odour and sliminess. If both are removed there is purity. The touch of a pure thing also sanctifies it.
गंगातोयेन सर्वेण मृद्भारैः पर्वतोपमैः ।। आमृत्योराचरेच्छौचं भावदुष्टो न शुध्यति ।। १८ ।।
But let him be cleaned with all the waters of the Gaṅgā, with heaps of sand resembling a mountain or let him observe purificatory rites till death, if a man has wicked feelings and emotions he can never be purified.
Neither heaven nor salvation can be attained by a man of vicious emotion even if he immolates himself in the holy fire. The only result will be that his body is entirely burnt off.