高僧傳 4.41

4.41

時剡東仰山，復有釋道寶者，本姓王，瑯瑘人，晉丞相道之弟。弱年信悟，避世辭榮，親舊諫止，莫之能制。香湯澡浴，將就下髮，乃詠曰：「安知萬里水，初發濫觴時。」後以學行顯焉。

At that time, on Mount Dongyang in Shan, there was also Shi Daobao, whose original surname was Wang, a native of Langye and a younger brother of the Jin Chancellor Dao [Wang Dao]. In his youth, he had faith and understanding; shunning the world and renouncing worldly glory, relatives and old friends tried to dissuade him, but none could restrain him. Bathing in fragrant water, just as he was about to have his hair shaved, he chanted: 'How could one know that the waters flowing ten thousand miles / first emerged as a trickle from their source?' Later, he became renowned for his learning and practice.