B.G 14.23

उदासीनवदासीनो गुणैर्यो न विचाल्यते। गुणा वर्तन्त इत्येव योऽवतिष्ठति नेङ्गते ॥२३॥

He remains indifferent and is not disturbed by the qualities, knowing that the qualities are acting, and remains steady without wavering.

Gīta Tātparya 14.23

The word 'iṅganaṃ' is used for momentary actions. The word 'ārambha' is used for activities that need prolonged effort. By stating 'neṅgate', i.e. not wavering, the attitude of lethargy is prohibited. Statements like 'like an indifferent person', 'renouncer of all undertakings' - indicate not undertaking any activity with special purpose, nor those activities that are regarded as non-Vaishnava, i.e. those that are not dear to Lord Vishnu.

उदासीनवदित्युक्तेश्च न केवलोदासीनत्वम्। नेङ्गते इत्युदासीनप्रवृत्तिनिषेधः। सर्वारम्भपरित्यागीति विशेषप्रयोजनापेक्षयापि न अवैष्णवारम्भः इति।

The statement 'like an indifferent person' implies not just indifference; by stating 'without wavering' the attitude of lethargy is prohibited. The statement 'renouncer of all undertakings' implies not undertaking any activity with a special purpose, nor those activities that are regarded as non-Vaishnava, i.e. those that are not dear to Lord Vishnu.

"इङ्गनं क्षणिकं कर्म दीर्घमारम्भ उच्यते"

"TMomentary actions are described using the word 'iṅganaṃ.'. The word 'ārambha' is used for activities that need prolonged effort."

इति शब्दनिर्णये ॥२३॥

- stated thus in Sabdanirṇaya, the decision of words.