Patanjali Yoga Sutra 4.12

Sanskrit Sutra

अतीतानागतं स्वरूपतोऽस्त्यध्वभेदाद्धर्माणाम्॥१२॥

Swami Vivekananda's translation

The past and future exist in their own nature, qualities having different ways.

Chapter link: Yoga Sutra Chapter 4