Jamshed, the fourth King of the Peshdadian dynasty, was the son of Vivanghan. He was a very devoted worshipper of Mazda. He was a Saoshyant who added many good practices to the Mazdayasni system. Though he was offered the position of prophet by Ahura Mazda, he had politely declined.
2. On account of his many beneficial changes, his subjects were always healthy and happy. It was a Golden Age in the history of Iran. As a result of abundant prosperity, the population increased manifold, and the king thrice increased the boundaries of his kingdom, towards the south.
3. It was king Jamshed, who first divided his subjects into four professional groups: Athornans “priests,” Ratheshtars “warriors,” Vastriyosh “farmers” and Hutaokhsh “artisans.” This helped to enhance the work quality and increase efficiency. A few Athornans were required to reside on mountains, devote their time to prayers and invoke the blessings of God to ward off evil from the kingdom.
4. King Jamshed developed a gadget, known as the Jām-e-Jamshed, by which, he was able to know the past and predict the future. The jām, which literally means a goblet, was probably an astronomical device to see the heavenly bodies.
5. He was inspired by Sarosh Yazad to introduce the practice of wearing the Sadra and tying the Kasti. This was to protect the wearer against evil influences.
6. To further the civilisation and enhance the comfort of his subjects, he introduced many arts, skills and trades like brick-making, clay-plastering and house building. He also introduced the art of swimming, diving, pearl-fishing and boat-making.
7. Mining started on a larger scale in King Jamshed’s time. Metals were made from ores, from which several implements like the plough and the hoe, as well as swords, spears, helmets, armours and horse-shoes were made. Mining of precious metals like gold and silver, and precious stones like diamonds, was also done.
8. King Jamshed taught his people to extract perfumes from musk, amber and flowers. He also introduced the practice of fumigation by the use of frankincense, amber, myrrh and camphor.
9. The art of making cloth and sewing of clothes was developed in King Jamshed’s reign. Spinning, weaving, warping and woofing were introduced. Clothes from zari (golden and silvern threads) and silk were made. The crafting of musical instruments and composing of music also started during his reign.
10. He introduced medicinal plants and herbs to relieve diseases. The practice of medicine as a profession started. Wine was discovered and used in moderate quantities as a medicine and a rejuvenating drink.
11. King Jamshed was guided through Sarosh Yazad about the arrival of a terrible snow-storm which would destroy the world. He was advised to take a few pairs of each species and create a Vara “an enclosure.” Accordingly, he established a settlement which came to be known as Var-e-Jam-Kard. In this enclosure, he was coronated on the day on which the sun enters the house of Aries. A Jashan was performed and there were celebrations. This day came to be known as Jamshedi Navroz.