5:4  

सांख्ययोगौ पृथग्बालाः प्रवदन्ति न पण्डिताः ।
एकमप्यास्थितः सम्यगुभयोर्विन्दते फलम् ॥५- ४॥

saaMkhyayogau pRRithagbaalaaH prawadanti na paNDitaaH ।

ekamapyaasthitaH samyagubhayorwindate phalam ॥५- ४॥

Source: Automatic ITRANS Transliteration

The ignorant proclaim rationality and yoga to be different, not the learned.

Undertaking even one skillfully earns the results of both.

Source: Milind S. Pandit

The ignorant, not the wise, consider Karma-Samnyasa and Karma-yoga as different from each other. The person who has truly mastered one, gets the benefits of both.

Source: The Bhagavad-Gita: The Sacred Song

Only the ignorant speak of karma-yoga and devotional service as being different from the analytical study of the material world [sankhya]. Those who are actually learned say that he who applies himself well to one of these paths achieves the results of both.

Source: Bhagavad Gita As It Is