大方廣佛華嚴經隨疏演義鈔 22.5

22.5

疏「如不入海安能得寶」，即《淨名．觀佛道品》「譬如不下巨海則不能得無價寶珠。如是不入煩惱大海則不能得一切智寶。」

Regarding the commentary's statement "if one does not enter the ocean, how can one obtain jewels": this is from the chapter "Contemplating the Buddha Path" in the Vimalakīrti-nirdeśa: "Just as one who does not descend into the great ocean cannot obtain the priceless jewel, so too, one who does not enter the great ocean of afflictions cannot obtain the jewel of omniscient knowledge."