B.G 14.08
तमस्त्वज्ञानजं विद्धि मोहनं सर्वदेहिनाम्। प्रमादालस्यनिद्राभिस्तन्निबध्नाति भारत ॥८॥
tamastvajñānajaṃ viddhi mohanaṃ sarvadehinām। pramādālasyanidrābhistannibadhnāti bhārata ॥8॥
[तमः (tamaḥ) - darkness; तू (tu) - but; अज्ञानजम् (ajñānajam) - originator of wrong-knowledge; विद्धि (viddhi) - know; मोहनम् (mohanam) - delusion; सर्व (sarva) - all; देहिनाम् (dehinām) - embodied beings; प्रमाद (pramāda) - negligence; आलस्य (ālasya) - laziness; निद्राभिः (nidrābhiḥ) - by sleep; तत् (tat) - that; निबध्नाति (nibadhnāti) - binds; भारत (bhārata) - O descendant of Bharata;]
O descendant of Bharata, understand that the 'tamas', i.e. darkness, which arises from wrong-knowledge is a delusion affecting all living beings. It binds them through negligence, laziness, and sleep.
Gīta Bhāshya 14.08
'ajñānajam' - from which wrong-knowledge arises. 'pramāda', i.e. negligence, and 'moha', i.e. delusion are because of 'tamas' quality is further clarified in 14.7.
अज्ञानं जायते यतः तत् अज्ञानजम्। 'प्रमादमोहौ तमसः' इति वाक्यशेषात् ॥८॥
ajñānaṃ jāyate yataḥ tat ajñānajam। 'pramādamohau tamasaḥ' iti vākyaśeṣāt ॥8॥
[अज्ञानं (ajñānam) - ignorance; जायते (jāyate) - arises; यतः (yataḥ) - from which; तत् (tat) - that; अज्ञानजम् (ajñānajam) - born of ignorance; प्रमादमोहौ (pramādamohau) - negligence and delusion; तमसः (tamasaḥ) - of darkness; इति (iti) - thus; वाक्यशेषात् (vākyaśeṣāt) - from the remainder of the sentence;]
That from which wrong-knowledge arises is termed 'ajñānajam', i.e. originator of wrong-knowledge. The phrase 'negligence and delusion are of darkness' (at 14.17), further provides clarity.
