俱舍論疏 8.153

8.153

論「見受胎生至專修正法」，答也。答中有二：一為利益、二為止謗。此即前也。就中有三利益：一引親眷令入正法、二為令知是輪王種、三為令所化生增上心。如文可解。

The Śāstra says: "Seeing him undergo womb-birth [...] single-mindedly cultivate the correct Dharma." This is the answer. Within the answer there are two points: first, to benefit [beings]; second, to stop slander. This is the former. Within it there are three benefits: first, to lead relatives to enter the correct Dharma; second, to let them know he belongs to the lineage of a wheel-turning king; third, to cause those to be converted to generate superior aspirations. It can be understood from the text.