@sybe07 said:”Does anyone know a sutta reference that shows the 5 heinous crimes lead directly to birth in hell after death?”
There are six heinous crimes in this sutta MN 115 – Many Elements – Bahudhātukasutta.
See the right side text referrence SC 13.1 to 13.10.
1. mātaraṃ jīvitā voropeyya (to murder their mother)
2. pitaraṃ jīvitā voropeyya (to murder their father)
3. arahantaṃ jīvitā voropeyya (to murder a perfected one (arahant))
4. duṭṭhacitto tathāgatassa lohitaṃ uppādeyya (to injure a Realized One (Buddha) with malicious intent)
5. saṅghaṃ bhindeyya (to cause a schism in the Saṅgha)
6. aññaṃ satthāraṃ uddiseyya (to acknowledge another teacher (beside the Buddha))
Second sutta sutta Aṅguttara Nikāya 1.21 First – paṭhamavagga Verse 271 to 276.
Third sutta AN 6.94 Things That Can’t Be Done (3rd) – Tatiyaabhabbaṭṭhānasutta.
With metta, SengKiat