In the Beautiful Ornament of Yellow Hat School (Zha-ser bstan pa'i mdzes rgyan), biography of the Ngulchu Dharmabhatta, composed by Ngulchu Yangchen Drubpai Dorjee, it is said:

"Recently, an invisible ghost is lifting a large rock near monastery days and nights. I consulted Lochen Rinpoche (Lotswa Rinchen Sangpo), who told me that it was Dholgyal and advised me to read the scripture of Ganden Lha Gyama in the assembly hall."