Nidanasutta 2.3

2.3

Etassa, ānanda, dhammassa ananubodhā appaṭivedhā evamayaṃ pajā tantākulakajātā kulagaṇṭhikajātā muñjapabbajabhūtā apāyaṃ duggatiṃ vinipātaṃ saṃsāraṃ nātivattati.

It is because of not understanding and not penetrating this teaching that this population has become tangled like string, knotted like a ball of thread, and matted like rushes and reeds, and it doesn’t escape the places of loss, the bad places, the underworld, transmigration.