大乘起信論裂網疏 3.121

3.121

[Śāstra:] Just as water has moving marks due to the wind, because the wind ceases, the moving marks immediately cease, but the essence of the water does not cease. If the water ceased, the moving marks would be severed, because without that which is relied upon (the water), there is nothing that can rely upon it (the movement); because the essence of the water does not cease, the moving marks continue.