Bhagavad Gita · 18.63

इति ते ज्ञानमाख्यातं गुह्याद्गुह्यतरं मया।विमृश्यैतदशेषेण यथेच्छसि तथा कुरु॥

iti te jñānam ākhyātaṁ guhyād guhyataraṁ mayā vimṛśhyaitad aśheṣheṇa yathechchhasi tathā kuru

Thus has wisdom more secret than all secrets been declared to you by Me. Reflect on this fully, and then do as you wish.

— Bhagavad Gita 18.63

Source: Sacred-Texts.com (Sanskrit) + Bhagavad-Gita.io (translations)