Verse 16

तनोत्ययं विचारेण चारुणा शान्तचेतसा ।प्रबोधनाय प्रथमं मनोमननमान्तरम्

In plain words

By beautiful vicāra, with a tranquil mind, he first unfolds, for the sake of awakening, the mind's own inward reflection.