首楞嚴義疏注經 8.315

8.315

「是故眾生心憶珍羞，口中水出。心憶前人或憐或恨，目中淚盈。貪求財寶，心發愛涎，舉體光潤。心著行婬，男女二根自然流液。」

"Therefore, when sentient beings recall delicacies in their minds, water flows from their mouths. When their minds recall a person of the past with either pity or resentment, tears fill their eyes. When they greedily seek wealth and jewels, love-saliva is produced in their minds, and their whole body becomes glossy. When their minds are attached to sexual intercourse, the male and female organs naturally discharge fluid.