Vijnana Bhairava Tantra
सर्वतः स्वशरीरस्य द्वादशान्ते मनोलयात् । दृढबुद्धेर्दृढीभूतं तत्त्वलक्ष्यं प्रवर्तते ॥ ५० ॥
When the mind is dissolved in dwadashanta by steady awareness and steady practice, the true nature or essence of the goal manifests everywhere in one's body.
english translation