Shatapatha Brahmana 2.2.4.9

2.2.4.9

tadvā etat | eva vicikitsāyai janma yatprajāpatirvyacikitsatsa vicikitsañcreyasyadhriyata yaḥ pra cājāyatātsyataścāgnermṛtyorātmānamatrāyata sa yo haivametadvicikitsāyai janma veda yaddha kiṃ ca vicikitsati śreyasi haiva dhriyate

And as to that same birth from out of doubt,--when Pragâpati doubted, he, while doubting, remained steadfast on the better (side), insomuch that he reproduced himself and saved himself from Agni, Death, when he was about to devour him: so he also who knows that birth from out of doubt, when he doubts about anything, still remains on the better (side).