Patanjali Yoga Sutra 4.5

Sanskrit Sutra

प्रवृत्तिभेदे प्रयोजकं चित्तमेकमनेकेषाम्॥५॥

Swami Vivekananda's translation

Though the activities of the different created minds are various, the one original mind is the controller of them all.

Chapter link: Yoga Sutra Chapter 4