首楞嚴義疏注經 7.183

7.183

世界初興元由虛妄，虛妄故動，動即是風，風即氣也，故云和合氣成。迷圓常理，成虛妄想，想、氣和合成於卵生。故動念為初，卵生居首。因茲種類八萬四千，世間施設且舉此數，理則無量。羯邏藍者，此云凝滑，入胎初位，胎卵未分。魚、鳥、龜、蛇即飛沈類也。

The initial emergence of the world originally arose from falsehood; because of falsehood there is movement, movement is wind, and wind is vapor; hence it is said, 'by combining with vapors there are formed.' Being confused about the principle of perfect constancy, false thinking is formed; thought and vapor combine to form the egg-born. Therefore the moving thought comes first, and the egg-born are placed at the beginning. Because of this, the species are eighty-four thousand; the conventional establishment of the mundane world temporarily offers this number, but in principle they are immeasurable. 'Kalala' is translated here as 'coagulated slime,' which is the first stage upon entering the womb, before womb and egg are distinguished. Fish, birds, turtles, and snakes are the classes that fly and sink.