Śatapatha Brāhmaṇa ("of a hundred paths") 1.1.4.16

1.1.4.16

sā manoreva jāyām manāvīm praviveśa | tasyai ha sma yatra vadantyai śṛṇvanti tato ha smaivāsurarakṣasāni mṛdyamānāni yanti te hāsurāḥ samūdira ito vai naḥ pāpīyaḥ sacate bhūyo hi mānuṣī vāgvadatīti kilātākulī haivocatuḥ śraddhādevo vai manurāvaṃ nveva vedāveti tau hāgatyocaturmano y ājayāva tveti kenetyanayaiva jāyayeti tatheti tasyā ālabdhāyai sā vāgapacakrāma

It entered into Manâvî, the wife of Manu; and when they heard her speak, the Asuras and Rakshas were continually being crushed. Thereupon the Asuras said to one another: 'Hereby even greater evil is inflicted on us, for the human voice speaks more!' Kilâta and Âkuli then said: 'God-fearing, they say, is Manu: let us then ascertain!' They went to him and said: 'Manu! we will sacrifice for thee!' He said: 'Wherewith?' They said: 'With this thy wife!' He said: 'So be it!' And on her being killed that voice went from her.