Vijñāna Bhairava Tantra 1.23

1.23

आमूलात्किरणाभासां सूक्ष्मात्सूक्ष्मतरात्मिकाम् । चिन्तयेत्तां द्विषट्कान्ते शाम्यन्तीं भैरवोदयः ॥२३॥

āmūlāt kiraṇābhāsāṃ sūkṣmāt sūkṣmatarātmikām | cintayet tāṃ dviṣaṭkānte śāmyantīṃ bhairavodayaḥ

anuṣṭubh

— from the root (mūlādhāra) ; — appearing as a ray ; — subtler than the subtle ; — one should contemplate ; — her ; — at the end of the twelve (finger-breadths) ; — (her) growing quiescent ; — the arising of Bhairava (occurs)

One should contemplate her, shining like rays from the root, more subtle than the subtle, dissolving at the end of the twelve (dvādaśānta) — there arises Bhairava.