首楞嚴義疏注經 10.135

10.135

「由此計度死後俱非，後際昏瞢無可道故，墮落外道，惑菩提性。是則名為第八外道，立五陰中死後俱非心顛倒論。」

"Through these calculations that after death it is neither, because the future boundary is dim and muddled with nothing that can be said, he falls among the non-Buddhists and is confused about the nature of bodhi. This is called the eighth non-Buddhist, who sets up within the five aggregates the mentally inverted theory that after death it is neither [existent nor non-existent]."