Patanjali's yoga sutras

प्रमाणविपर्ययविकल्पनिद्रास्मृतय
pramāṇa viparyaya vikalpa nidrā smr̥taya

pramāṇa प्रमाण – knowledge
viparyaya विपर्यय – misconceptions
vikalpa विकल्प – abstract thought
nidrā निद्रा – sleep
smr̥taya स्मृतय – memories