Samyuktagama (Sanskrit fragments) 285.11

285.11

「我時復作是念：『何法無故無此老、病、死？何法滅故老、病、死滅？』即正思惟，起如實無間等，無生則無老、病、死，生滅故，則老、病、死滅。

“Once again, I had this thought, ‘The absence of what causes the absence of old age, illness, and death? The ceasing of what causes old age, illness, and death to cease?’ When I properly considered it, this true [understanding] occurred to me immediately: ‘If birth is absent, then old age, illness, and death are absent. If birth ceases, then old age, illness, and death cease.’