辯正論 6.26

6.26

外六異曰（注老君降世。始自周文之日。訖于孔丘之時釋迦下生。肇於淨飯之家。當我莊王之世）。

The External Sixth Difference states: (Note: Lord Lao's descent to the world began in the days of King Wen of Zhou and ended in the time of Kong Qiu; Śākya's birth below originated in the family of Śuddhodana, corresponding to the era of our King Zhuang.)