Some of the earliest of these texts, Kriya tantras such as the "Mañjuśrī-mūla-kalpa" (c. 6th century), teach the use of mantras and dharanis for mostly worldly ends including curing illness, controlling the weather and generating wealth. The "Tattvasaṃgraha Tantra" ("Compendium of Principles"), classed as a "Yoga tantra", is one of the first Buddhist tantras which focuses on liberation as opposed to worldly goals. In another early tantra, the "Vajrasekhara" (Vajra Peak), the influential schema of the five Buddha families is developed. Other early tantras include the "Mahāvairocana Abhisaṃbodhi" and the "Guhyasamāja" (Gathering of Secrets).