大乘百法明門論開宗義決 1.176

1.176

生第四定中有中者由謗解脫等者。此顯生上起下分別發業煩惱。婆沙論說。昔者有一少聞苾芻。不學經論直修定得初靜慮謂得初果。乃至證得第四靜慮謂言我得阿羅漢果。既得彼定合生彼天。後命終已將生彼處。於中有身便起謗言。夫阿羅漢生分已盡。如何今者我有生耶。故知世間無真解脫。但是智人虛妄所說。由謗解脫便即變作地獄中有墮於地獄。既彼中有屬第四禪。所起謗毀乃是下地發業煩惱。故生上地能起下地分別煩惱。

As for "when born in the intermediate state of the fourth dhyāna, through repudiating liberation, etc.": this reveals the discrimination-based karma-initiating afflictions of a lower [stage] arising in one born in a higher [stage]. The Vibhāṣā says: In the past, there was a monk of little learning who did not study the sūtras and treatises, but directly cultivated concentration; having attained the first dhyāna, he thought he had attained the first fruit [of the path]; up to when he realized the fourth dhyāna, he said, "I have attained the fruit of an arhat." Having attained that concentration, he was destined to be born in that heaven. Later, his life ended, and when he was about to be born in that place, while in the intermediate existence, he gave rise to the repudiation: "An arhat has exhausted all future births; how is it that now I have birth? Therefore I know there is no true liberation in the world; it is merely a false fabrication spoken by the wise." Due to repudiating liberation, his intermediate existence immediately transformed into a hellish intermediate existence, and he fell into hell. Since that intermediate existence belonged to the fourth dhyāna, the repudiation that arose was an affliction of a lower stage that initiates karma. Therefore, one born in a higher stage can give rise to discriminatory afflictions of a lower stage.