Verse 31

नियतिं यादृशीमेतत्संकल्पयति सा तथा ।नियतानियतान्कांश्चिदर्थाननियतानपि

In plain words

Whatever kind of niyati this [manas] resolves upon, that niyati is just so; and certain things, fixed and unfixed, and unfixed ones too —