Manava Dharmashastra 2.107

2.107

yaḥ svādhyāyam adhīte 'bdaṃ vidhinā niyataḥ śuciḥ
tasya nityaṃ kṣaraty eṣa payo dadhi ghṛtaṃ madhu //

For him who, being pure and controlling his organs, during a year daily recites the Veda according to the rule, that (daily recitation) will ever cause sweet and sour milk, clarified butter and honey to flow.