釋氏要覽 2.84

2.84

The Zhigui on Sounds and Meanings says: The Mingyuan says that the largest of deer is called zhù (stag). Herds of deer follow it, all watching where the stag goes and following the turn of the stag's tail as standard. Today lecturers hold it in imitation of this, as they have something to indicate. The Five Hundred Questions says: If a monk grasps a stag-tail whisk, he will fall into the [evil] paths.