Anandakanda 1.7.74

1.7.74

tathā daśapalenāpi mahendratvam avāpnuyāt /
ekādaśapalair devi brahmatvaṃ nātra saṃśayaḥ //

and by ten palas, one attains the state of Mahendra;
by eleven palas, O goddess, the state of Brahmā, of this there is no doubt;