Śatapatha Brāhmaṇa ("of a hundred paths") 3.6.4.14

3.6.4.14

sa yadāha | dyām mā lekhīriti divam mā hiṃsīrityevaitadāhāntarikṣam mā hiṃsīriti nātra tirohitamivāsti pṛthivyā sambhaveti pṛthivyā saṃjānīṣvetyevaitadāhāyaṃ hi tvā svadhitistetijānaḥ praṇināya mahate saubhagāyetyeṣa hyenaṃ svadhitistejamānaḥ praṇayati

Now when he says, 'Graze not the sky,' he means to say, 'Injure not the sky!' In the words 'hurt not the air' there is nothing obscure. By 'Unite with the earth,' he means to say, 'Be thou in harmony with the earth!' 'For this sharp-edged axe hath led thee forward unto great bliss,' for this sharp axe indeed leads it forward.