Śatapatha Brāhmaṇa ("of a hundred paths") 9.3.4.14

9.3.4.14

āsīnam bhūtamabhiṣiñcet | āsta iva vai bhūtastiṣṭhntam bubhūṣantaṃ tiṣṭhatīva vai bubhūṣanbastājine puṣṭikāmamabhiṣiñcetkṛṣṇājine brahmavarcasakāmamubhayorubhayakāmaṃ taduttarataḥ pucasyottaraloma prācīnagrīvamupastṛṇāti

One who has gained a position in the world should be anointed sitting, for one who has gained a position is seated, so to speak;--and one who is striving to gain one standing, for one who wishes to gain a position, stands, so to speak. On a he-goat's skin should be anointed one desirous of prosperity, on a black-antelope skin one desirous of spiritual lustre, on both (kinds of skins) one desirous of both: that (skin) he spreads north of the tail (of the fire-altar) with its hair uppermost and its neck-part towards the east.