佛祖統紀 45.61

45.61

In the second year: earlier, the Vice Director of the Bureau of Carriages Zhū Shòuchāng did not know where his mother was when he was seven years old. He pricked his blood to write Buddhist sūtras, and travelled in all directions seeking her. After fifty years, he again gave up his official post to enter the Qín region, finding his mother in Tóngzhōu, when she was already seventy years old. Sū Shì, then banished to live in Huángzhōu, sent a poem to congratulate him. At that time, people said this was brought about by the resonance of Shòuchāng's filial piety.