Rigveda, the early sections of Samaveda typically begin with hymns to Agni and Indra but shift to the abstract. Their meters shift also in a descending order. The songs in the later sections of the Samaveda have the least deviation from the hymns derived from the Rigveda. In the Samaveda, some of the Rigvedic verses are repeated. Including repetitions, there are a total of 1875 verses numbered in the Samaveda recension translated by Griffith. Two major recensions have survived, the Kauthuma/Ranayaniya and the Jaiminiya. Its purpose was liturgical, and they were the repertoire of the or "singer" priests. Yajurveda The Yajurveda Samhita consists of prose mantras. It is a compilation of ritual offering formulas that were said by a priest while an individual performed ritual actions such as those before the yajna fire. The core text of the Yajurveda falls within the classical Mantra period of Vedic Sanskrit at the end of the 2nd millennium BCE – younger than the Rigveda, and roughly contemporary with the Atharvaveda, the Rigvedic Khilani, and the . Witzel dates the Yajurveda hymns to the early Indian Iron Age, after c. 1200 and before 800 BCE. corresponding to the early Kuru Kingdom. The earliest and most ancient layer of Yajurveda samhita includes about 1,875 verses, that are distinct yet borrow and build upon the foundation of verses in Rigveda. Unlike the Samaveda which is almost entirely based on Rigveda mantras and structured as songs, the Yajurveda samhitas are in prose, and they are different from earlier Vedic texts linguistically. The Yajur Veda has been the primary source of information about sacrifices during Vedic times and associated rituals. There are two major groups of texts in this Veda: the "Black" (Krishna) and the "White" (Shukla). The term "black" implies "the un-arranged, motley collection" of verses in Yajurveda, in contrast to the "white" (well arranged) Yajurveda. The White Yajurveda separates the Samhita from its Brahmana (the Shatapatha Brahmana), the Black Yajurveda intersperses the Samhita with Brahmana commentary. Of the Black Yajurveda, texts from four major schools have survived (Maitrayani, Katha, Kapisthala-Katha, Taittiriya), while of the White Yajurveda, two (Kanva and Madhyandina). The youngest layer of Yajurveda text is not related to rituals nor sacrifice, it includes the largest collection of primary Upanishads, influential to various schools of Hindu philosophy. Atharvaveda The Artharvaveda Samhita is the text 'belonging to the Atharvan and Angirasa poets. It has about 760