Bhashya
तदेतत् एवलक्षणं मिथुनम् ओमित्येतस्मिन्नक्षरे ससृज्य-ते , एव सर्वकामाप्तिगुणविशिष्टं मिथुनम् ओकारे ससृष्टंविद्यत इति ओंकारस्य सर्वकामाप्तिगुणवत्त्वं सिद्धम् ,वाङ्मयत्वं ओकारस्य प्राणनिष्पाद्यत्वं च मिथुनेन ससृष्टत्व-म् ।मिथुनस्य कामापयितृत्वं प्रसिद्धमिति दृष्टान्त उच्यते—यथा लोके मिथुनौ मिथुनावयवौ स्त्रीपुंसौ यदा समाग-च्छत ग्राम्यधर्मतया सयुज्येयाता तदा आपयत प्रापयतअन्योन्यस्य इतरेतरस्य तौ कामम् , तथा स्वात्मानुप्रवि-ष्टेन मिथुनेन सर्वकामाप्तिगुणवत्त्वम् ओकारस्य सिद्धमि-त्यभिप्राय ॥
In plain words
This very couple, possessing these characteristics, merges into the syllable Om. Indeed, this couple, endowed with the power to fulfill all desires, exists united within the sound Om. Thus, it is established that Om possesses the quality of fulfilling all desires. The fact that Om is composed of speech and generated by breath constitutes its union as a couple. That a couple has the power to fulfill desires is a matter of common experience, as shown by this analogy: Just as in the world, when a man and a woman come together in physical union, they fulfill and satisfy each other's desires, so too, through this couple that has entered into its very essence, the power of the syllable Om to fulfill all desires is established. This is the meaning.
Close to the Sanskrit
That this couple, having such characteristics, is united in this syllable Om; indeed, the couple, characterized by the quality of fulfilling all desires, is found united in the syllable O. Thus, the possession of the quality of fulfilling all desires by the syllable Om is proven. The nature of consisting of speech and the state of being produced by breath of the syllable Om is the state of being united by the couple. The capacity of the couple to fulfill desires is well-known; thus the example is stated: Just as in the world, a couple—the two members of a couple, a man and a woman—when they come together, should they unite in sexual union, then they two fulfill, they cause to reach, the desire of one another, of each other; so, by the couple that has entered into its own self, the possession of the quality of fulfilling all desires by the syllable Om is proven—this is the meaning.