Terma
Terma are spiritual treasures, including sacred teachings, ritual texts, and material objects such as statues, ritual implements, and sacred substances, concealed primarily by Guru Rinpoché and Yéshé Tsogyal. Termas can be hidden both in the earth and within the mind streams of their direct disciples, to be revealed at the destined time by tertöns, or "treasure revealers." While the vast majority of termas were concealed by Guru Rinpoché and Yéshé Tsogyal, some teachings were also hidden or re-concealed by other accomplished masters, including their direct disciple Vairocana and his subsequent incarnations, as well as by the great Indian scholar and sage Vimalamitra in the ninth century. Within Düdjom Lingpa's Tröma Nakmo revelations, the termas stemming from Saraha and Machik Labdrön are particularly important.