Bhagavatapurana 4.18.19

4.18.19

prakalpya vatsaṃ kapilaṃ siddhāḥ saṅkalpanāmayīm /
siddhiṃ nabhasi vidyāṃ ca ye ca vidyādharādayaḥ //

19. The Siddhas made Kapila the calf and thereby secured the attainments (of realising their) objects by mere wish and thought *viz.*, the eight powers known as Animan, Mahiman and so on; and the Vidyādharas and others drew the milk of Vidyā into their vessel *viz.*, the sky (with the help of the same Kapila).