Byasanasutta 1.5

1.5

Sīlabyasanahetu vā, bhikkhave, sattā diṭṭhibyasanahetu vā kāyassa bhedā paraṃ maraṇā apāyaṃ duggatiṃ vinipātaṃ nirayaṃ upapajjanti.

It is because of loss of ethics or view that sentient beings, when their body breaks up, after death, are reborn in a place of loss, a bad place, the underworld, hell.