Chapter 49(p. 50): During the funeral of Baldr, the various gods are described arriving, including Freyr with his magnificent boar. The text also provides its alternate name, Slidrugtanni.
...while Freyr drove in a chariot with a boar called Gullinbursti or Slidrugtanni.
Chapter 5-8(p. 75): While listing the proper kennings (poetic names) for Freyr, the text states that he is the "possessor of... the boar known as Gullinbursti." It also mentions its other name, Slidrugtanni, and includes a verse depicting Freyr riding the "golden-bristled boar" to Baldr's pyre.
He is possessor of Skidbladnir and of the boar known as Gullinbursti...
Battle-skilled Freyr rides in front to Odin’s son’s [Baldr’s] pyre on golden-bristled boar and governs hosts.
It is also called Slidrugtanni.
Chapter 34-35(p. 96): In the detailed story of the creation of the gods' treasures, the dwarf Eitri places a pig's hide in the forge to create the second of three great works.
...Eitri put a pig’s hide in the forge... but he went on blowing as before until the smith took his work out of the forge, and it was a boar and its bristles were of gold.
Chapter 35-36(p. 97): When the dwarf Brokk presents the treasures to the gods, he gives the boar to Freyr and describes its magical properties: its ability to run faster than any horse through air and sea, and to illuminate the darkest of nights with its bristles.
To Freyr he gave the boar and said that it could run across sky and sea by night and day faster than any horse, and it never got so dark from night or in worlds of darkness that it was not bright enough wherever it went, there was so much light shed from its bristles.
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