Verse 56

संकल्पमेव तन्मन्ये संकल्पोपशमेन तत् ।शोषयामि यथा शोषमेति संसारपादपः

In plain words

That, the mind, I hold to be nothing but saṃkalpa; by the stilling of saṃkalpa I shall dry it up, so that the tree of saṃsāra comes to wither.