B.G 2.11
श्रीभगवानुवाच। अशोच्यानन्वशोचस्त्वं प्रज्ञावादांश्च भाषसे। गतासूनगतासूंश्च नानुशोचन्ति पण्डिताः ॥ २-११॥
śrībhagavānuvāca। aśōcyānanvaśōcastvaṁ prajñāvādāṁśca bhāṣasē। gatāsūnagatāsūṁśca nānuśōcanti paṇḍitāḥ ॥ 2-11॥
[śrībhagavān uvāca = Sri Bhagavan said; aśōcyān = that should not be grieved; anvaśōcastvaṁ = You grieve for those; prajñā vādāṁśca = seemingly wise words (reasoned in your own way); bhāṣasē = and speak; gatāsūn = either for the dead; agatāsūṁśca = or for the living; nānuśōcanti = do not grieve; paṇḍitāḥ = The wise.]
Sri Bhagavan said: You grieve for those that should not be grieved for and speak seemingly wise words reasoned in your own way. The wise grieve neither for the dead nor for the living.
Gīta Tātparya 2.11
The argument opposed to knowledgeable is 'prajna-avāda'.
प्रकर्षेण जानन्तीति प्रज्ञाः तदवादः प्रज्ञावादः। प्राज्ञमतविरुद्धवादं वदसि। कथम् ? गतासून् ॥ ११ ॥
prakarṣēṇa jānantīti prajñāḥ tadavādaḥ prajñāvādaḥ। prājñamataviruddhavādaṁ vadasi। katham? gatāsūn ॥ 11 ॥
[prakarṣēṇa = Those who can grasp; jānantīti = and understand well; prajñāḥ= are knowledgeable, Wise (jnanins); tad avādaḥ prajñāvādaḥ = The argument opposed them is 'prajñāvādān'; prājñamataviruddhavādaṁ = opposed to the opinion of knowledgeable; vadasi = You are stating; katham ? = Why; gatāsūn = Answer is given by 'gatāsūn' ( 2.11)]
The 'Jnānins' are those who can grasp and understand well. The argument opposed to them is 'prajñāvāda', (So, Krishna says) you are stating an opinion that is opposed to Jnānins. Why? Answer is given by 'gatāsūn'.