Question: Piran, son of Viseh's body was washed with what solid, waxy, and grey or blackish flammable substance after he died? 

Context articles: Piran Viseh
Zino's petrel
Ambergris
Ambergris (disambiguation)
Marquess Grey
Houman
Camphor
Torch (juggling)
Flash fire
Farangis

Piran son of Viseh (Persian: پیران ویسه‎ ‎ ) is a Turanian figure in Shahnameh, the national epic of Greater Iran.
 Beside Shahnameh, Piran is also mentioned in other sources such as Tabari and Tha'ālibī.
 He is the king of Khotan and the spahbed of Afrasiab, the king of Turan.
 He is described as a wise and intelligent man, seeking to bring peace to Iran and Turan.
 In old Iranian writings, Piran and Aghrirat are the only Turanians that have been described positively.
 Piran plays a vital role in the story of Siavash, the story of Kay Khosro and the story of Bizhan and Manizhe.
 Piran was killed by Goudarz.
 Kay Khosro mourned the death of Piran and ordered to wash his body with Musk and Ambergris.
 In Persian culture, Piran is a symbol of wisdom.
 It has been said that Karim Khan called Mohammad Khan Qajar "Piran Viseh".
 Piran is often compared to Bozorgmehr.
The Zino's petrel or freira ("Pterodroma madeira") is a small seabird in the gadfly petrel genus which is endemic to the island of Madeira.
 This long-winged petrel has a grey back and wings, with a dark "W" marking across the wings, and a grey upper tail.
 The undersides of the wings are blackish apart from a triangle of white at the front edge near the body, and the belly is white with grey flanks.
 It is very similar in appearance to the slightly larger Fea's petrel, and separating these two Macaronesian species at sea is very challenging.
 Zino's was formerly considered to be a subspecies of the soft-plumaged petrel, "P. mollis", but they are not closely related, and Zino's was raised to species status because of differences in morphology, calls, breeding behaviour and mitochondrial DNA.
 It is Europe's most endangered seabird, with breeding areas restricted to a few ledges high in the central mountains of Madeira.
Ambergris ( or , Latin: "ambra grisea" , Old French: "ambre gris" ), "ambergrease" or "grey amber", is a solid, waxy, flammable substance of a dull grey or blackish colour, produced in the digestive system of sperm whales.
Ambergris is a solid, waxy, flammable substance of a dull grey or blackish colour produced in the digestive system of sperm whales.
Marquess Grey was a title in the Peerage of Great Britain.
 It was created on 19 May 1740 for Henry Grey, 1st Duke of Kent, with remainder to the male issue of his body and in default thereof to his granddaughter the Honourable Jemima Campbell and the heirs male of her body.
 The Duke of Kent died only two weeks after the creation of the marquessate when the dukedom and most of its subsidiary titles became extinct (see Duke of Kent).
 He was succeeded in the barony of Lucas (which could be passed on through female lines) and in the marquessate of Grey according to the special remainder by his granddaughter Jemima, the second Marchioness Grey.
 She was the daughter of John Campbell, Lord Glenorchy, later 3rd Earl of Breadalbane and Holland, and Lady Amabel Grey (died 1726), eldest daughter of the Duke of Kent.
 On 22 May 1740, three days after the marquessate was created, she married the Honourable Philip Yorke, later 2nd Earl of Hardwicke.
 They had two daughters, Lady Amabel Yorke and Lady Mary Yorke.
 Lady Grey died in January 1797, aged 73.
 As she had no sons the marquessate died with her.
 However, she was succeeded in the barony of Lucas by her eldest daughter, Lady Amabel, who in 1816 was created Countess de Grey in her own right (see Earl de Grey for further history of this title).
Houmān (Persian: هومان‎ ‎ ) is one of the most famous Turanian heroes in Shahnameh, the national epic of Greater Iran.
 Houmān is famous for his bravery, loyalty, and chivalry, such that even Iranians who are longtime enemies of Turanians admire his personality.
 He is a descendant of Tur, a son of Viseh and brother of Piran.
 Houmān is the highest ranking Turanian commander and after Piran, he is the second leading member of Viseh clan.
 Houman first appears in the story of Rostam and Sohrab, where Afrasiab sends him with an army of 12,000 men to accompany Sohrab in his journey to Iran.
 He has been instructed by Afrasiab to not let Sohrab recognize his father, Rostam, so that they fight together and one of them kill the other.
 Rostam on the deathbed of Sohrab, agreed to promise that he would not hurt Houmān and his army.
Camphor ( ) is a waxy, flammable, white or transparent solid with a strong aroma.
 It is a terpenoid with the chemical formula CHO.
 It is found in the wood of the camphor laurel ("Cinnamomum camphora"), a large evergreen tree found in Asia (particularly in Sumatra and Borneo islands, Indonesia) and also of the unrelated "kapur tree", a tall timber tree from the same region.
 It also occurs in some other related trees in the laurel family, notably "Ocotea usambarensis".
 The oil in rosemary leaves ("Rosmarinus officinalis"), in the mint family, contains 10 to 20% camphor, while camphorweed ("Heterotheca") only contains some 5%.
 Camphor can also be synthetically produced from oil of turpentine.
 It is used for its scent, as an ingredient in cooking (mainly in India), as an embalming fluid, for medicinal purposes, and in religious ceremonies.
 A major source of camphor in Asia is camphor basil (the parent of African blue basil).
Juggling torches are one of various props used by jugglers.
 Torches are usually commercially made props that are made of wood and/or metal with a wick attached at one end.
 The wick is impregnated with a flammable substance (usually paraffin) and ignited before use.
A flash fire is a sudden, intense fire caused by ignition of a mixture of air and a dispersed flammable substance such as a solid (including dust), flammable or combustible liquid (such as an aerosol or fine mist), or a flammable gas.
 It is characterized by high temperature, short duration, and a rapidly moving flame front.
Farangis (Persian: فَرَنگیس‎ ‎ ) or Frigis (Persian: فریگیس‎ ‎ ) is a female character in the Persian epic Shahnameh.
 She is the eldest daughter of Afrasiab, king of Turan.
 She is also the second and favourite wife of Siyâvash, the saintlike prince of Iran (Siyâvash's first wife was Juraira daughter of Piran Viseh) and mother of a legendary hero and later Shah of Iran, Kai Khosrow.
 Although a Turanian by birth, Farangis shows loyalty to her husband's kingdom and dynasty.
 She accompanies her son when he leaves Turan in the hopes of gathering an Iranian army to avenge Siyâvash.