ཡང་དག་ཧེ་རུ་ཀ
Texts related to Yangdak Heruka, the deity among the Kagyé (bka' brgyad) who is associated with enlightened mind (thugs):
Courtesy of Himalayan Art Resources
Vajrayāna Buddhism places restrictions on the reading and practice of certain texts, which are intended only for those who have received the requisite empowerments, transmissions and instructions.
If you are unsure as to whether you are entitled to read or practice a particular text please consult a qualified lineage-holder.