न द्वेष् - without dvesha, तस्य - for him, प्रज्ञा प्रतिष्ठिता - has sthitaprajña
The previous shloka described the first step of sthitaprajña, namely ekendriya sañjñā.
This shloka describes the next step, namely vyatireka sañjñā
Some desire food, few others desire houses etc.. This desire arises only to experience the joy of obtaining these things.
He remains unaffected by these dualities
A 'muni' who doesn't have attachment to sharira-jivanam, treats joy/sorrow equally.
This viveka gives rise to true jnana in him & takes firm roots thereby
Same as (A), but here he is termed as an 'aparoksha-jnani'