संन्यासं कर्मणां कृष्ण पुनर्योगं च शंससि। यच्छ्रेय एतयोरेकं तन्मे ब्रूहि सुनिश्िचतम् ॥

sannyāsaṁ karmaṇāṁ kṛiṣhṇa punar yogaṁ cha śhansasi yach chhreya etayor ekaṁ tan me brūhi su-niśhchitam

Renunciation of actions Thou praisest, O Krishna, and then also yoga. Of the two which one is the better? That tell me conclusively.

In plain words: Arjuna is confused. Krishna has praised giving up action, and he has also praised yoga done through action. Arjuna asks him to say clearly which one is better.