Verse 9
शब्दज्ञानानुपाती वस्तुशून्यो विकल्पः ॥९॥
śabda-jñāna-anupātī vastu-śūnyo vikalpaḥ ॥9॥
Imaginings are engendered by word knowledge without regard for what actually exists in the real world. ||9||
Verse 10
अभावप्रत्ययाअलम्बना तमोवृत्तिर्निद्र ॥१०॥
abhāva-pratyaya-ālambanā tamo-vrttir-nidra ॥10॥
Deep sleep is the absence of all impressions resulting from opacity in that which is mutable in human beings (chitta). ||10||
Verse 11
अनुभूतविषयासंप्रमोषः स्मृतिः ॥११॥
anu-bhūta-viṣaya-asaṁpramoṣaḥ smrtiḥ ॥11॥
Recollections are engendered by the past, insofar as the relevant experience has not been eclipsed. ||11||
PATANJALI YOGA SUTRAS