Rig Veda
अ॒व॒द्यमि॑व॒ मन्य॑माना॒ गुहा॑क॒रिन्द्रं॑ मा॒ता वी॒र्ये॑णा॒ न्यृ॑ष्टम् । अथोद॑स्थात्स्व॒यमत्कं॒ वसा॑न॒ आ रोद॑सी अपृणा॒ज्जाय॑मानः ॥ अवद्यमिव मन्यमाना गुहाकरिन्द्रं माता वीर्येणा न्यृष्टम् । अथोदस्थात्स्वयमत्कं वसान आ रोदसी अपृणाज्जायमानः ॥
Deeming it disreputable (that he should be brought forth) in secret, his mother endowed (Indra) with (extraordinary) vigour; therefore, as soon as born he sprung up of his own accord, invested with splendour, and filled both heaven and earth.
english translation