MānGS, 1, 10, 1.1 prāgudañcaṃ lakṣaṇam uddhṛtyāvokṣya sthaṇḍilaṃ gomayenopalipya maṇḍalaṃ caturasraṃ vāgniṃ nirmathyābhimukhaṃ praṇayet tatra brahmopaveśanam //

MānGS, 1, 19, 4.1 ud u tyaṃ jātavedasam ity etayopasthāyādityābhimukhaṃ darśayet /

MānGS, 2, 2, 1.0 prāgudañcaṃ lakṣaṇam uddhatyāvokṣya sthaṇḍilaṃ gomayenopalipya maṇḍalaṃ caturasraṃ vāgniṃ nirmathyābhimukhaṃ praṇayet //