labdhvā tad-antaraṁ śakro
nidrāpahṛta-cetasaḥ
diteḥ praviṣṭa udaraṁ
yogeśo yoga-māyayā
labdhvā - finding; tat-antaram - after that; śakraḥ - Indra; nidrā - by sleep; apahṛta-cetasaḥ - unconscious; diteḥ - of Diti; praviṣṭaḥ - entered; udaram - the womb; yoga-īśaḥ - the master of yoga; yoga - of yogic perfections; māyayā - by the power.
A perfectly successful yogī is expert in eight kinds of perfection. By one of them, called aṇimā-siddhi, he can become smaller than an atom, and in that state he can enter anywhere. With this yogic power, Indra entered the womb of Diti while she was pregnant.