《宋书·列传·卷九十四》
他的父亲戴硕子，以贩卖布匹为业，法兴的两个哥哥延寿、延兴都学有所成，延寿会写字，法兴好学，山阴县有个叫陈载的人，家中富有，有钱三千万，乡民们都说： 戴硕子三个儿子，抵得上陈载三千万钱。 
家贫，父硕子，贩珝为业。法兴二兄延寿、延兴并修立，延寿善书，法兴好学。山阴有陈载者，家富，有钱三千万，乡人咸云： 戴硕子三兒，敌陈载三千万钱。 
His father Dai Shuozi worked as a cloth seller. Fa Xing's two older brothers, Yanshou and Yanxing, both achieved academic success. Yanshou could write, and Fa Xing was good at studying. There was a man named Chen Zai in Shanyin County who was rich and had 30 million yuan. The villagers said: Dai Shuozi's three sons are worth Chen Zai's 30 million yuan.