大宋僧史略 1.16

1.16

又費長房開皇三寶錄中。定佛是周莊王他十年甲午四月八日生。以常星不見為徵也。又法顯曾遊西域云。佛是商王代中生。顯因見師子國三月出佛齒。供養王前。宣曰。佛滅已一千四百九十七載也。顯以晉義凞中逆推。知佛是商時生矣。又廬山度律師眾聖點記云。周貞定王二年甲戌佛生。法寶大師全不取此　又感通傳中。是夏桀之時見佛垂迹也。

Furthermore, in the Kaihuang Sanbao lu by Fei Changfang, it is determined that the Buddha was born on the eighth day of the fourth month in the jiawu year, the tenth year of King Zhuang of the Zhou, taking the disappearance of the regular stars as proof. In addition, Faxian once travelled in the Western Regions and stated that the Buddha was born during the reign of the kings of Shang; Faxian, having seen in the Lion Country [Sri Lanka] the Buddha's tooth brought forth in the third month to be offered before the king, heard the proclamation: 'One thousand four hundred and ninety-seven years have already passed since the Buddha's nirvāṇa.' Calculating backwards from the Yixi era of the Jin, Faxian knew that the Buddha was born in the Shang era. Furthermore, the Dotted Record of the Myriad Sages by Vinaya Master Du of Mount Lu states that the Buddha was born in the jiaxu year, the second year of King Zhending of the Zhou. Dharma Master Fabao completely rejected this. In addition, in the Gantong zhuan, it is said that the Buddha's trace was seen during the time of Jie of the Xia.