楞伽阿跋多羅寶經註解 4.197

4.197

恒沙世間無情之物，雖為魚鼈人獸等踐踏，不生惱亂之念，以喻如來聖智，神通自在，受諸外道人獸惱亂不起念想。蓋以本願力利安眾生，無有愛憎分別。輸收摩羅，翻殺子魚。

The Ganges sands are insentient things of the worldly realm: although trodden upon by fish, turtles, humans, beasts, and the like, they do not produce thoughts of distress. This serves as an analogy for the Tathāgata's noble wisdom and sovereign supernatural power: experiencing the distress caused by externalists, humans, and beasts, he produces no thoughts or conceptualizations. This is because by the power of his original vows he benefits and pacifies sentient beings, without conceptual distinctions of love or hate. Śiśumāra is translated as 'child-killing fish' (crocodile).