金光明最勝王經疏 6.113

6.113

釋名者，云長者子，標父以明子，表種姓尊。流水者，以行彰名，明其行勝。又自亦是長者，為簡其父復稱為子。以有養人長魚之德，故號長者。流水二義：一能流水、二能與水。從行為名，此乃德行雙彰。此品廣明其事，故以為名。

Regarding the explanation of the name: saying 'the guild-master's son' indicates the father to clarify the son, demonstrating the nobility of his clan. 'Jalavāhana' (Flowing Water) manifests his name through his deeds, clarifying the excellence of his actions. Moreover, he himself was also a guild-master, but to distinguish him from his father, he is again called 'son'. Because he possessed the virtue of nurturing people and fostering fish, he was called a guild-master. 'Flowing Water' (Jalavāhana) has two meanings: first, being able to make water flow; second, being able to give water. Deriving his name from his deeds, this manifests both virtue and practice together. Because this chapter comprehensively explains this matter, it is taken as its title.