佛祖統紀 41.27

41.27

In the first month of the sixth year, an edict ordered the welcoming of the Śākyamuni Buddha's relic bone from Famen Temple in Fengxiang into the palace for offerings, and it was circulated among various temples for viewing and veneration. In the second month, the Buddha bone was escorted back to the temple. Chan Master Shitou Xiqian of Mount Heng passed away. The Master attained the Dharma from Chan Master Si of Qingyuan. Later, his lineage divided into three houses: in the fifth generation it became Dongshan, in the seventh generation Yunmen, and in the ninth generation Fayan.