Tantras are ancient texts and teachings in Hinduism and Buddhism that provide guidelines for spiritual practices and rituals. They often emphasize the importance of meditation, visualization, and the use of mantras to achieve spiritual enlightenment and connection with the divine. These texts explore various aspects of the universe, including the nature of reality and the relationship between the individual and the cosmos. Tantric practices can involve complex rituals, but they ultimately aim to transform the practitioner's consciousness and promote inner harmony.