Śatapatha Brāhmaṇa ("of a hundred paths") 2.3.4.37

2.3.4.37

mahi trīṇāmavo 'stu | dyukṣam mitrasyāryamṇaḥ durādharṣaṃ varuṇasya na hi teṣāmamā cana nādhvasu vāraṇeṣu īśe ripuraghaśaṃsaḥ te hi putrāso aditeḥ pra jīvase martyāya jyotiryacantyajasramiti tatrāsti nādhvasu vāraṇeṣvityeti ha vā adhvāno vāraṇā ya ime 'ntareṇa dyāvāpṛthivī etānhyetadupatiṣṭhate tasmādāha nādhvasu vāraṇeṣviti

[He continues, Vâg. S. III, 31-33], 'May the mighty, the heavenly, the unassailable favour of the three, Mitra, Aryaman, and Varuna, be (with us)! For the wicked enemy lords it not over them (that are protected by these gods), neither at home nor on dangerous paths: for those sons of Aditi bestow undying light on the mortal that he may live!'--In this (prayer) he says, 'nor on dangerous paths;' for dangerous indeed are the paths that lie between heaven and earth: those he now walks, and therefore he says, 'nor on dangerous paths.'