B.G 2.62 and 63
dhyāyatō viṣayān puṁsaḥ saṅgastēṣūpajāyatē। saṅgāt sañjāyatē kāmaḥ kāmāt krōdhō'bhijāyatē॥62॥
krōdhādbhavati sammōhaḥ sammōhāt smr̥tivibhramaḥ। smr̥tibhraṁśād buddhināśō buddhināśāt praṇaśyati ॥63॥
When the person dwells on material topics, he develops attachment in them. From attachment springs desire. From that desire comes forth the anger. Anger results in the inability to discriminate. Loss of discrimination results in the distortion of memory. The distorted memory destroys the knowledge. He perishes from the destruction of knowledge.
Gīta Tātparya 2.62 and 63
'saṁmōhā' - means wrong knowledge
saṁmōhāt mithyājñānāt । jñātamapi anyathā smaryatē vākyārthānāmanyathā smaraṇāt nirṇītaṁ jñānamapi naśyati ॥ 62,63 ॥
'saṁmōhāt' - means wrong knowledge, i.e. even after understanding thinking otherwise. Because of mind's attention on something else, knowledge to decipher the meaning of the sentence is lost.