B.G 18.19
jñānaṁ karma ca kartā ca tridhaiva guṇabhedataḥ। procyate guṇasaṅkhyāne yathāvacchṛṇu tānyapi ॥19॥
Knowledge, action, and the doer are classified threefold according to the qualities. Listen to them as they are explained in the enumeration of qualities.
Gīta Bhāshya 18.19
For the purpose of elaborating the spiritual practice, differences in qualities are explained starting from this verse. Term 'guṇasaṅkhyāne' in the context means ways of enumerating qualities.
punaḥ sādhanaprathanāya guṇabhedānāha - jñānaṃ ityādinā।
Again, for the purpose of elaborating the means, i.e. spiritual practice, he spoke about the differences in qualities, beginning with the 'jñānaṃ' verse.
guṇasaṅkhyāne guṇagaṇanaprakaraṇe॥
The term 'guṇasaṅkhyāne' in the context means ways of enumerating qualities.
Gīta Tātparya 18.19
Term 'guṇasaṅkhyāne' refers to the supreme Sāṅkhya philosophy.
evaṁ guṇasaṅkhyāne paramasāṅkhyaśāstre॥
Thus, the term 'guṇasaṅkhyāne' refers to the supreme Sāṅkhya philosophy.