2.53

धारणासु च योग्यता मनसः

dhāraṇāsu ca yogyatā manasaḥ

The line

And the mind becomes fit for the holdings.

नेपालीमा

अनि चित्त धारणाहरूका लागि योग्य हुन्छ।

Where it sits

Breath regulation's second fruit points forward. dhāraṇā (धारणा) was named in the list of eight and is defined at 3.1. The mind is made fit for it here, before withdrawal is even defined. The book's order is not a staircase you may not peek ahead on. 2.54 defines withdrawal now.

Split: dhāraṇāsu (धारणासु) + ca (च) + yogyatā (योग्यता) + manasaḥ (मनसः)

Sanskrit, in depth

The words

WordGrammarSense
dhāraṇāsu (धारणासु)locative plural of dhāraṇā (धारणा)in the holdings. For the practices of holding the mind.
ca (च)indeclinableand. This too, besides the dwindling of the covering.
yogyatā (योग्यता)nominative singular, femininefitness.
manasaḥ (मनसः)genitive singular of manas (मन)of the mind.

The phrases

And the mind becomes fit for the holdings. dhāraṇāsu (धारणासु) is locative plural, “with respect to the dhāraṇās (धारणास्).” yogyatā (योग्यता) is the nominative. manasaḥ (मनसः) is genitive, “of the mind.” ca (च) adds this fruit to 2.52.

Sanskrit in this line

Locative plural -su (सु) is the plural of the locative, “in the many,” from 2.5. dhāraṇā (धारणा) is an ā (आ)-stem, so the locative plural is -āsu (आसु). manas (मन) is an -as (अस्) stem: genitive manasaḥ (मनसः), the same pattern as ablative tapasaḥ (तपसः).

Say it back

Say what the mind is fit for. The word is dhāraṇā (धारणा), plural, locative.

Next

2.54. Withdrawal is the senses, as it were, imitating the mind's own form, by not joining their objects.