The Grihya Sutras, Part 1 (SBE29), by Hermann Oldenberg, , at sacred-texts.com
1 9_1. In the forest, with a piece of wood in his hand, seated, he performs the Sandhyâ (or twilight devotion) constantly, observing silence, turning his face north-west, to the region between the chief (west) point and the intermediate (north-western) point (of the horizon), until the stars appear,
2 9_2. Murmuring, when (the twilight) has passed, the Mahâvyâhritis, the Sâvitrî, and the auspicious hymns.
3. In the same way in the morning, turning his face to the east, standing, until the disk of the sun appears.
10, 1 10_1. When (the sun) has risen, the study (of the Veda) goes on.
74:9_1 9, 1, On the Sandhyâ ceremony comp chiefly Baudhâyana II, 7. Samitpâni of course is not samyatapâni, as Nârâyana explains it. On anvashtamadesa comp. Professor Stenzler's note on Âsvalâyana III, 7, 4.
74:9_2 The Svastyayanas are texts such as Rig-veda I, 89; IV, 31.
74:10_1 10, 1. This Sûtra evidently should be placed at the end of the ninth chapter; comp. IV, 6, 9. The fact that, as the commentary observes, the words nityam vâgyatah (chap. 9, Sûtra 1) are to be p. 75 supplied here also points in the same direction. That this Sûtra has nothing to do with the Agniparikaryâ, of which the tenth chapter treats, becomes evident also from Râmakandra's Paddhati.