Agniveshyagrihyasutra 2.6.4.2

2.6.4.2

prāṅmukho vā udaṅmukho vā grāmānniṣkramya apa āplutya yajñopavītyācānto 'klinnavāsā darbhāṇāṃ mahadupastīrya prākkūlānāṃ teṣu prāṅmukha upaviśyopasthānaṃ kṛtvā dakṣiṇottarau pāṇī sandhāya pavitravantau vijñāyate 'pāṃ vā eṣa oṣadhīnāṃ raso yad darbhāḥ sarasameva brahma karoti dyāvāpṛthivyoḥ sandhimīkṣamāṇaḥ sammīlya vā yathā vā yuktamātmānaṃ manyeta tathā yukto 'dhīyīta svādhyāyam \

Having gone out of the village facing east or facing north, having bathed in water, wearing the sacred thread, having sipped water, wearing dry garments, having spread a large layer of darbha grass with the tips pointing east, having sat down upon them facing east, having performed reverent attendance, having joined the two hands together, right over left, holding strainers—for it is known: "Darbha grass is indeed the sap of the waters and plants; thus he makes the Veda endowed with sap"—looking at the junction of heaven and earth or having closed the eyes, or in whatever way he considers himself concentrated, thus concentrated he should recite his daily Vedic recitation.