Vyasa’s commentary on yoga sutra 1-1, he said, yoga is Samadhi (contemplation). Samadhi is a key characteristic of Chitta which pervades in all 5 states of mind at any given time. Vyasa called 5 kinds as 5 Bhumi of Chitta in his commentary.
वृत्तयः पञ्चतय्यः क्लिष्टाऽक्लिष्टाश्चः॥५॥
Vṛttayaḥ pañcatayyaḥ kliṣṭāakliṣṭāśca
The thought-streams are five-fold, painful / with anguish and not painful or without anguish.
प्रमाणविपर्ययविकल्पनिद्रास्मृतयः॥६॥
Pramāṇaviparyayavikalpanidrāsmṛtayaḥ
Right knowledge, wrong knowledge, Illusionary or Imaginary knowledge, sleep and memory.
In next episode I will explain each faculty in detail.
Namaste.