Quite a few ancient mantras are located in the Saṃhitā percentage of the Vedas. The Saṃhitās are one of the most ancient layer with the Vedas, and have a lot of mantras, hymns, prayers, and litanies. Metta meditation is often a sort of Buddhist meditation. It’s also called loving-kindness meditation. https://shanimahadasha38372.blogdon.net/a-secret-weapon-for-mantra-42637783