Śatapatha Brāhmaṇa ("of a hundred paths") 3.3.4.25

3.3.4.25

athādhvaryurārohaṇaṃ vimuñcati | varuṇasyottambhanamasītyupastambhanenopastabhnāti varuṇasya skambhasarjanī stha iti śamye udvṛhati sa yadāha varuṇasya skambhasarjanī stha iti varuṇyo hyeṣa etarhi bhavati yatsomaḥ krītaḥ

The Adhvaryu then removes the Soma-wrapper. With (Vâg. S. IV, 36) 'Thou art Varuna's stay,' he props (the cart) with the prop. With 'Ye two are the rest of Varuna's stay,' he pulls out the two wedges. The reason why he says, 'Ye two are the rest of Varuna's stay,' is that he, the bought Soma, now indeed is of Varuna.