Mimamsasutra 91.2

91.2

naitad evam. śāstraparicchinnaṃ hi kramaṃ bādheran. katham. vedaṃ kṛtvā vediṃ kurvītetīmāṃ śrutim uparundhyād antarā vedaṃ vediṃ cānuṣṭḥīyamānam ācamanādi. dakṣiṇena caikahastenānuṣṭhīyamāneṣu padārtheṣu kadācit pradhānaṃ svakālam atikrāmeta. ubhābhyāṃ hastābhyāṃ anutiṣṭhan pradhānakālaṃ saṃbhāvayiṣyati.

This is not so; for they would annul the order delimited by scripture. How? The performance of sipping water and the like between [making] the veda-bundle and the altar would obstruct this direct scriptural statement: 'Having made the veda-bundle, he should make the altar.' And when items are performed with only one hand, the right hand, the primary element might sometimes exceed its proper time. Performing with both hands, one will secure the time for the primary element.