SVidhB, 1, 1, 15.1 sa yadā gāyatraṃ bṛhatyāṃ gāyati bārhataṃ jagatyām jāgataṃ triṣṭubhi samatāṃ cāpadyate /

SVidhB, 1, 5, 3.1 āpannaḥ prāyaścittaṃ caret //