Zoroastrian rituals

Yasht (, ) is a Middle Persian term for sacrifice or worhship. The term commonly applies to the collection of 21 Yashts, although it may also refer to other texts within the wider Avesta collection.

thumb|upright=1.2|Zoroastrian priest instructing a child in the tying of the kushti in the navjote ceremony

thumb|upright|Parsi people|Parsi navjote ceremony

thumb|Dastur Khurshed Kaikobad Dastoor calling on the Prime Minister of India, 2014A dastur ( ), sometimes spelt dustoor, is a term for a Zoroastrian high priest who has authority in religious matters and ranks higher than a mobad or herbad. In this specific sense, the term is used mostly among the Parsis of India. The term has also been used in a secular sense to refer to a prime minister, minister or government councillor.

thumb|4th-century relief of the investiture of the Sasanian Empire|Sasanian king [[Ardashir II (centre). Mithra (left) stands on a lotus flower holding a barsom.]] thumb|right|A 4th-century BCE depiction of a priest bearing a barsom. From the Oxus Treasure. The present-day barsom is much shorter, and made of wire.

Sedreh (also called sudreh, sudre or sudra) is the Avestan term for the undergarment worn by Zoroastrians, which is worn alongside the Kushti.