BṚHADĀRAṆYAKA UPANISHAD · 6.4.23

सोष्यन्तीम् अद्भिर् अभ्युक्षति --
यथा वायुः पुष्करिणीं समिङ्गयति सर्वतः ।
एवा ते गर्भ एजतु सहावैतु जरायुणा ।
इन्द्रस्यायं व्रजः कृतः सार्गलः सपरिश्रयः ।
तम् इन्द्र निर्जहि गर्भेण सावरां सहेति ॥

soṣyantīm adbhir abhyukṣati --
yathā vāyuḥ puṣkariṇīṃ samiṅgayati sarvataḥ ।
evā te garbha ejatu sahāvaitu jarāyuṇā ।
indrasyāyaṃ vrajaḥ kṛtaḥ sārgalaḥ sapariśrayaḥ ।
tam indra nirjahi garbheṇa sāvarāṃ saheti ॥

When she is about to bring forth, he sprinkles her with water, saying.-- Like as the wind doth agitate A lotus-pond on every side, So also let thy fetus stir. Let it come with its chorion. This fold of Indra's has been made With barricade enclosed around. O Indra, cause him to come forth-- The after-birth along with babe!'

Robert Ernest Hume · The Thirteen Principal Upanishads (1921), Bṛhadāraṇyaka VI.4