Mbh 3.303.1b

At these words of his, Kunti said, ‘Everything hath already been done in my behalf since thou, O chief of those that are versed in the Vedas, and my father also, have been pleased with me! As regards the boons, I consider them as already obtained by me, O Brahmana!’ The Brahmana thereupon said, ‘If, O gentle maid, thou dost not, O thou of sweet smiles, wish to obtain boons from me, do thou then take this mantra from me for invoking the celestials! Any one amongst the celestials whom thou mayst invoke by uttering this mantra, will appear before thee and be under thy power. Willing or not, by virtue of this mantra, that deity in gentle guise, and assuming the obedient attitude of slave, will become subject to thy power!’”