Patanjali Yoga Sutra 1.18

Sanskrit Sutra

विरामप्रत्ययाभ्यासपूर्वः संस्कारशेषोऽन्यः॥१८॥

Swami Vivekananda's translation

There is another Samadhi which is attained by the constant practice of cessation of all mental activity, in which the Chitta retains only the unmanifested impressions.

Chapter link: Yoga Sutra Chapter 1