vasantaḥ = while living; dharma-niratāḥ = absorbed in dharma; vane = in the forest; mūla-phala-aśanāḥ = and only eating roots and fruits; na = no; labhante = they attain; sukham = happiness;  bhītāḥ = [because] they are frightened; rākṣasaiḥ = of rākṣasas; krūra-karmabhiḥ = who engage in cruel deeds.