Bhagavad Gita · Sankhya YogaChapter 2, Shloka 33 (2.33)

Arjuna's argument turned around. In the first chapter Arjuna's biggest argument was — fighting will bring sin (1.36, 1.45). Krishna turns this around here: not fighting will bring sin — because abandoning svadharma is itself sin.

Three losses: (1) abandoning svadharma, (2) losing kīrti (honour), (3) incurring pāpa (sin). Shankaracharya: kirti — gained through encounters with Mahadeva and others — that is, the fame Arjuna had won through events such as his fight with Shiva (in the form of the Kirata) (a story from the Mahabharata).

Is this the same argument that gets criticised? On the surface Krishna is raising the "fear of sin" — just as Arjuna had. But there is a difference: Arjuna's "sin" was based on consequences (the destruction of the family); Krishna's "sin" is based on abandoning duty. This lays the ground for "svadharme nidhanaṃ śreyaḥ" in 3.35.