Zamyad Yasht
The Zamyad Yasht also known as the Kayan Yasn is the nineteenth Yasht of the 21 Yasht collection and is dedicated to the veneration of Zam. It belongs to the Legendary Yashts and, with 96 stanzas, it is the fourth longest in the collection.
Name
The name of the Yasht is reported in different ways in the sources. While today, the name Zamyad Yasht is widely used, the early manuscripts F1 and E1 use the name Kayan Yasn, i.e., Yasna of the Kayanians. This situation is caused by the disparate nature of the text, which consists of two different parts, one of which dedicated to the Kayanians.In addition, the origin of Zamyad itself remains a matter of debate. While the first part is derived from Zam, the divinity of Earth to whom the Yasht is dedicated, the second part is unclear. According to Pirar, it may be a corruption of zam yazata. Humbach and Ichaporia, however, reject this derivation based on the existence of the, otherwise implausible, phrase zamyad yazata, and derive it instead from a hypothetical early Middle Persian zam huyad yazad.
Overview
The Zamyad Yasht is generally divided into two distinct parts none of which mention Zam, i.e., the divinity of Earth to whom it is nominally dedicated. It has been speculated that the geographical references in the first part may establish a connection. The two parts are assumed to have originally been independent text, which were only joined at some later time. The Yasht is celebrated on the 28th day of each month of the Zoroastrian calendar. Among the Yasht collection, it is grouped into the Legendary Yashts because of the lengthy descriptions of the Kayanians.Content
The Zamyad Yasht consists of two parts. The first, smaller, part contains a description of important mountains of the Avestan world. The second, much longer, part is dedicated to the Kayanians. In addition to the partition into stanzas, the second part is furthermore grouped into 15 chapters, called Kardas. This difference again points toward this part of the Yasht having originally formed an independent text.Geographical fragment - Stanzas 1-8
The first part of contains a list of mountains. This list is also found in the Bundahishn, where it is, however, followed by similar lists of seas, rivers, and lakes. This indicates that the Avestan descriptions in the ZamyadYasht are the remnants of an originally much longer text, parts or all of which survived in the Middle Persian Bundahishn. This first part of the Yasht is, therefore, called the geographical fragment.