Śatapatha Brāhmaṇa ("of a hundred paths") 3.7.1.25

3.7.1.25

tasya yannikhātam | tena pitṛlokaṃ jayatyatha yadūrdhvaṃ nikhātādā raśanāyai tena manuṣyalokaṃ jayatyatha yadūrdhvaṃ raśanāyā ā caṣālāttena devalokaṃ jayatyatha yadūrdhvaṃ caṣālāddvyaṅgulaṃ vā tryaṅgulaṃ vā sādhyā iti devāstena teṣāṃ lokaṃ jayati saloko vai sādhyairdevairbhavati ya evametadveda

With that part of it which is dug in, he gains the world of the Fathers; and with what is above the dug-in part, up to the girdle-rope, he gains the world of men; and with what is above the rope, up to the top-ring, he gains the world of the gods; and what (space of) two or three fingers’ breadths there is above the top-ring,--the gods called the 'Blessed,'--their world he therewith gains; verily, whosoever thus knows this, he becomes one of the same world with the blessed gods.