KENA UPANISHAD · 3/7

अथ वायुमब्रुवन् वायवेतद्विजानीहि किमेतद्यक्षमिति तथेति ॥

atha vāyumabruvan vāyavetadvijānīhi kimetadyakṣamiti tatheti ॥

Then they said to Vayu, 'O Vayu, this discern, what is this mighty Daemon.' He said, 'So be it.'