Śatapatha Brāhmaṇa ("of a hundred paths") 13.8.3.10

13.8.3.10

atha pradarātpurīṣamāhartavā āha etaddhāsyāḥ pitryamanatiriktamatho aghameva tadbaddhṛ karotyasminnu haike'vāntaradeśe karṣūṃ khātvā tato'bhyāhāraṃ kurvanti parikṛṣantyu haike dakṣiṇataḥ paścāduttaratastato'bhyāhāraṃ kurvanti sa yathā kāmayeta tathā kuryāt

He then bids them bring some soil from a cleft in the ground, for thus the Fathers’ (share) in this (earth) is not excessive; and he also thereby makes the (dead man's) sin to be restricted. And some, now, dig in that intermediate (south-eastern) quarter, and fetch it from there; and others, again, do so towards the south-west, and fetch it northwards from there: he may do as he chooses.