Śatapatha Brāhmaṇa ("of a hundred paths") 2.3.4.4

2.3.4.4

atha yasmānnopatiṣṭheta | ubhaye ha vā idamagre sahāsurdevāśca manuṣyāśca tadyaddha sma manuṣyāṇāṃ na bhavati taddha sma devānyācanta idaṃ vai no nāstīdaṃ no 'stviti te tasyā eva yāñcyāyai dveṣeṇa devāstirobhūtā neddhinasāni neddveṣyo 'sānīti tasmānnopatiṣṭheta

Then as to why he should not approach them. Now in the beginning both the gods and men were together here. And whatever did not belong to the men, for that they importuned the gods, saying, 'This is not ours: let it be ours!' Being indignant at this importunity, the gods then disappeared. Hence (it may be argued) one should not approach (the fires), fearing lest he should offend them, lest he should become hateful to them.