瑜伽論記 3.23

3.23

答：少故不說，即殺阿羅漢類收，若依地藏菩薩經說；殺辟支佛不成逆罪，以彼無有說法利物故。

Answer: Because they are few, it is not mentioned; it is subsumed under the category of killing an arhat. If we rely on what is stated in the Kṣitigarbha Bodhisattva Sūtra: ‘Killing a pratyekabuddha does not constitute a heinous transgression, because they do not preach the Dharma to benefit beings.’