Verse 13

अन्तरस्ति यदात्मेन्दोश्चिद्रूपं चिद्रसायनम् ।स्वत आस्वादितं तेन तदहंतादिनोदितम्

In plain words

What exists within the moon that is the Self — the very form of cit, the elixir of cit — is tasted of itself by it; that is what has risen as "I"-ness and the rest.