The works of Ādi Śaṅkarācārya

Chāndogyopaniṣadbhāṣyam

Verse 5

तदेतन्मिथुनमोमित्येतस्मिन्नक्षरे स-सृज्यते यदा वै मिथुनौ समागच्छतआपयतो वै तावन्योन्यस्य कामम् ॥ ६ ॥

In plain words

This paired reality is brought together within that very syllable, Om. Just as when a couple comes together, they fulfill each other's deepest desires.

Close to the Sanskrit

That this pair is united precisely in this imperishable syllable Om; when indeed two partners come together, those two truly fulfill each other's desire.