Rigvedabrahmana 19.10

19.10

tadvaitadahareke chandogāḥ sarvastomaṃ kurvantyanenāhnā ṣaḍahamāpnuvanṣaḍahena saṃvatsaraṃ ye ca saṃvatsare kāmāḥ ṣaḍaho vā u sarvaḥ saṃvatsara
iti vadantaste yadi tathā kuryuḥ ṣaḍahakḷptaṃ śastraṃ kalpayīta yatprathamasyāhna
ājyaṃ tadājyaṃ yo dvitīyasyāhnaḥ praugaḥ sa praugo yattṛtīyasyāhno
marutvatīyaṃ tanmarutvatīyaṃ yaccaturthasyāhno niṣkevalyaṃ tanniṣkevalyaṃ yatpañcamasyāhno vaiśvadevaṃ tadvaiśvadevaṃ yatṣaṣṭhasyāhna āgnimārutaṃ tadāgnimārutaṃ
tatra sarvānpṛṣṭha¹stotriyānsamāhṛtyopariṣṭātpragāthasya pragāthīkṛtya śaṃsetṣaḍahasyāptyai tadyathaitenāhnā chandogāḥ ṣaḍahamāpnuvanti ṣaḍahena saṃvatsaraṃ
ye ca saṃvatsare kāmā evamevaitenāhnā hotā ṣaḍahamāpnoti ṣaḍahena
saṃvatsaraṃ ye ca saṃvatsare kāmāstadya saitatpradikṣvāha saiṣā mugdhiriveti
yaṃ kaṃca cchandogāḥ stomamupāpadyeranna tadādriyeta yadevedaṃ śastaṃ prāgaikṣāma² tata eva neyādete vā u stomasāhe sūkte yatkayāśubhīyatadidāsīye tābhyāmeva na niṣpryaveteti na niṣpryaveteti