Upanishads 2.18

2.18

ahaṃ diśaḥ pradiśa ādiśaśca viṣvaṃk punānaḥ paryemi lokam
ahaṃ viśvā oṣadhīrgarbhe ādhāṃ yāmiridaṃ dhinuyurdāśuṣaḥ prajāḥ
ahaṃ carāmi bhuvanasya madhye punaruccāvacaṃ vyaśnuvānaḥ
yo mā veda nihitaṃ guhā cit sa iditthā bobhavīdāśayadhyai