Śatapatha Brāhmaṇa ("of a hundred paths") 3.5.1.24

3.5.1.24

tāṃ vai yugaśamyena vimimīte | yugena yatra haranti śamyayā yato haranti yugaśamyena vai yogyaṃ yuñjanti sā yadevādaḥ siṃhī bhūtvāśāntevācarattadevaināmetadyajñe yunakti

He measures it with the yoke and pin;--namely with the yoke (that place) whither they take (the earth); and with a yoke-pin that, from whence they take (the earth), for the team is harnessed with the yoke and the pin: it is because she (Vâk), as a lioness, at that time roamed about unappeased that he thus yokes her here at the sacrifice.