The Varnashrama Dharmas have been

The teaching of the Bhagavatpada, as well as the teachings of other
Aachaaryas, which, following the Vedas, are intended for the
purification and elevation of one's Atman, prescribes that the Dharmas
mentioned in the vedas should be practised by men in accordance with
their respective Varnas and Ashramas. The Varnashrama Dharmas have been
ordained by Sastras, not merely to foster among men an attitude of
mutual helpfulness or only to promote the general cooperative material
well-being of society. They have been prescribed for self-purification
which they effect by developing peace, an essential means to liberation,
and which cannot be otherwise experience.