B.G 2.56
duḥkhēṣvanudvignamanāḥ sukhēṣu vigataspr̥haḥ। vītarāgabhayakrōdhaḥ sthitadhīrmunirucyatē ॥2-56॥
He whose mind remains unperturbed in sorrow and devoid of desires for pleasures, who is free from passion, fear, and anger, and who is established in steadfast wisdom is called a 'muni', i.e. sage.
Gīta Bhāshya 2.56
Described characteristics of 'sthitha-prajna' are the very things to be cultivated by spiritual aspirant. Taste, passion, and love are attachments to what is not beneficial.
tadēva spaṣṭayati uttaraiḥ tribhiḥ ślōkaiḥ। ētānyēva jñānōpāyāni ca taccōktam- = therefore
Same (characteristics of 'sthita-prajna') is clarified further in the next three verses. These are means to knowledge as well. Hence, it is said:
"tadvai jijñāsubhiḥ sādhyaṁ jñānināṁ yattu lakṣaṇam॥"
iti।
"That very thing which are to be practiced by the inquisitive for perfection are the characteristic of the wise.
-states proverb.
śōbhanādhyāsō rāgaḥ।
'rāga' i.e. passion is being attached to what is not beneficial.
"rasō rāgastathā raktiḥ śōbhanādhyāsa ucyatē॥"
ityabhidhānaṁ ॥56॥
"Taste, passion, and love are said to be attachments to what is not beneficial."
-states word encyclopedia.