The Mettā Sutta is the name used for two Buddhist discourses (Pali: sutta) found in the Pali Canon. The one, more often chanted by Theravadin monks, is also referred to as Karaṇīyamettā Sutta after the opening word, Karaṇīyam, "(This is what) should be done." It is found in the Suttanipāta (Sn 1.8) and Khuddakapāṭha (Khp 9). It is ten verses in length and it extols both the virtuous qualities and the meditative development of mettā (Pali), traditionally translated as "loving kindness" or "friendliness". Additionally, Thanissaro Bhikkhu's translation, "goodwill", underscores that the practice is used to develop wishes for unconditional goodwill towards the object of the wish.
The other, also chanted by Theravadin Buddhist monks at times, extols the benefits of the practice of mettā (Pali) and it is found in the Anguttara Nikaya (AN 11.15). is also referred to as Mettānisamsa Sutta. This article will focus on the first version.