Yāska's Nirukta 4.21

4.21

``daur me pitā janitā nābhir atra bandhur me mātā pṛthivī mahīyam/
uttānayoścaṃvor yonir antaratrā pitā duhitur garbham ādāt/''.
dyaur me pitā pitā vā pālayitā vā janayitā,.nābhir atra bandhur me,.mātā pṛthivī mahatī iyam/
bandhuḥ sambandhāt/
nābhiḥ samnahanāt nābhi ā samnaddhā garbhā jāyanta ity āhur etasmād eva jñātīnt sanābhi1p ity ācakṣate sambandhu1p iti ca/
jñātiḥ saṃjñānāt/
uttānayoścaṃvor yonir antah/
uttāna uttatāna ūrdhvatāno vā/
tatra pitā duhitṛ6.garbham dadhāti parjanyaḥ pṛthivieh/
śamyuḥ sukhayuh/
``athā naḥ śamyor arapo dadhāta/''.
rapas ripram iti pāpa nāmanī bhavatah/
śamanaṃś ca rogānām yāvanaṃś ca bhayānām/
atha api śamyur bārhaspatya ucyate/
``taccham yor āvṛṇīmahe gātum yajñāya gātum yajñapataye/''.ity api nigamo bhavati/
gamanam yajñāya gamanam yajña pati4/