翻譯名義集 1.119

1.119

【羅睺羅】什曰：「阿脩羅食月時，名羅睺羅。秦言覆障，謂障月明也。羅睺羅六年處母胎所覆障故，因以為名。」西域記云：「羅怙羅，舊曰羅睺羅，又曰羅云，皆訛略也。此云執日。」《淨名疏》曰：「有翻宮生。太子出家，太妃在宮，何得有娠？佛共淨飯王於後證是太子之子，親是宮之所生，因名宮生。」

[Rāhula] Kumārajīva said: "When an asura eclipses the moon, he is named Rāhula. In Qin, this means 'Obstructor', referring to his obstructing the moon's brightness. Because Rāhula stayed in his mother's womb for six years, being obstructed, he was named after this." The Xiyu ji says: "Rāhula was formerly called Luohuluo, and also Luoyun; both are erroneous abbreviations. Here translated as 'Seizing the Sun'." The Jingming shu says: "Some translate it as 'Palace Born'. When the prince left home and the princess remained in the palace, how could she have become pregnant? Later, the Buddha together with King Śuddhodana verified that he was indeed the prince's son, truly born of the palace, and thus he was named Palace Born."