The mode of worship was the performance of Yajna, sacrifices which involved sacrifice and sublimation of the havana sámagri (herbal preparations) in the fire, accompanied by the singing of Samans and 'mumbling' of Yajus, the sacrificial mantras. The sublime meaning of the word yajna is derived from the Sanskrit verb yaj, which has a three-fold meaning of worship of deities (devapujana), unity (saògatikaraña) and charity (dána). An essential element was the sacrificial fire – the divine Agni – into which oblations were poured, as everything offered into the fire was believed to reach God.