SB 11.27.11

sandhyā — at the three junctures of the day (dawn, noon and sunset); upāsti — worship (by chanting the Gāyatrī mantra); ādi — and so on; karmāṇi — prescribed duties; vedena — by the Vedas; ācoditāni — recommended; me — My; pūjām — worship; taiḥ — by these activities; kalpayet — one should perform; samyak-saṅkalpaḥ — who has perfectly fixed his determination (that the object of his endeavor will be the Personality of Godhead); karma — the reaction of fruitive work; pāvanīm — which eradicates.