एषा तेऽभिहिता सांख्ये बुद्धिर्योगे त्विमां शृणु ।बुद्ध्या युक्तो यया पार्थ कर्मबन्धं प्रहास्यसि ॥
eṣā te’bhihitā sāṃkhye buddhiryoge tvimāṃ śṛṇubuddhyā yukto yayā pārtha karmabandhaṃ prahāsyasi
Such is the intelligence (the intelligent knowledge of things and will) declared to thee in the Sankhya, hear now this in the Yoga, for if thou art in Yoga by this intelligence, O son of Pritha, thou shalt cast away the bondage of works.
Gītā 2·39(Gita’s) Sankhya is the catholic and Vedantic Sankhya such as we find it in its first principles and elements in the great Vedantic synthesis of the Upanishads and in the later developments of the Puranas. Its idea of Yoga is that large idea of a principally subjective practice and inner change, necessary for the finding of the Self or the union with God, of which the Rajayoga is only one special application.