法苑珠林 9.117

9.117

又佛本行經云。時淨飯王復集群臣言。何處有師最便武技教我太子。諸臣報王。此處有釋名為善覺。其子名羼提提婆（隋言忍天）堪教太子兵戎法式。其所解知一切凡有二十九種。善巧妙術（已下略而不述）忍天白王。臣甚能教。王為太子欲遊戲故造一園苑。名曰勤劬。是時太子入彼苑內游戲。或令按摩。時彼五百釋種臣悉為其兒。古先一切書典教於太子。及自釋子亦如是教。又復世人積年累月。所學問者或成不成。太子能於四年之中。及餘釋種皆悉學得。通達無礙一切自在。是時忍天即為太子而說偈言。

The Abhiniṣkramaṇa-sūtra also says: At that time King Śuddhodana again assembled his ministers and said, "Where is there a master most skilled in martial arts to teach my crown prince?" The ministers reported to the king, "Here is a Śākya named Suprabuddha; his son is named Kṣāntideva, who is capable of instructing the prince in the methods of warfare. What he understands and knows comprises altogether twenty-nine kinds of fine, ingenious arts (the following is omitted and not related)." Kṣāntideva addressed the king, "I am fully capable of teaching." Because the king wished for the prince to disport himself, he built a park named Diligence. At that time the prince entered that park to disport himself, or had himself massaged. At that time, those five hundred Śākya ministers all had their sons teach the prince all the ancient scriptures and records, and they likewise taught their own Śākya sons. Furthermore, as for what worldly people learn through accumulated months and years, some succeed and some do not; yet the prince was able, within four years, together with the other Śākyas, to learn them completely, penetrating them without hindrance, entirely master of them all. At that time Kṣāntideva spoke a verse for the prince: