Throughout Dany’s POV, the Dothraki characters express a variety of Dothraki superstitions, wisdom, and cultural sayings. The source of the Dothraki knowledge is never properly cited, other than to say “It is known.”
That is probably to be expected in a culture that does not read or write. But I notice that Dany seems to contradict, rebut, or fail to heed these Dothraki-isms quite regularly. Some of them seem silly, but for most of them, it is not difficult to see the wisdom in it.
Anyway, here is every “It is known” in chronological order. Enjoy.
Dragon Terrible Evil Beasts
Viserys had told her that the last Targaryen dragons had died no more than a century and a half ago, during the reign of Aegon III, who was called the Dragonbane. That did not seem so long ago to Dany. “Everywhere?” she said, disappointed. “Even in the east?” Magic had died in the west when the Doom fell on Valyria and the Lands of the Long Summer, and neither spell-forged steel nor stormsingers nor dragons could hold it back, but Dany had always heard that the east was different. It was said that manticores prowled the islands of the Jade Sea, that basilisks infested the jungles of Yi Ti, that spellsingers, warlocks, and aeromancers practiced their arts openly in Asshai, while shadowbinders and bloodmages worked terrible sorceries in the black of night. Why shouldn’t there be dragons too?
“No dragon,” Irri said. “Brave men kill them, for dragon terrible evil beasts. It is known.”
“It is known,” agreed Jhiqui. (AGOT Daenerys III)
Moon is God, Woman Wife of Sun
“He told me the moon was an egg, Khaleesi,” the Lysene girl said. “Once there were two moons in the sky, but one wandered too close to the sun and cracked from the heat. A thousand thousand dragons poured forth, and drank the fire of the sun. That is why dragons breathe flame. One day the other moon will kiss the sun too, and then it will crack and the dragons will return.”
The two Dothraki girls giggled and laughed. “You are foolish strawhead slave,” Irri said. “Moon is no egg. Moon is god, woman wife of sun. It is known.”
“It is known,” Jhiqui agreed. (AGOT Daenerys III)
Lamb Men Lay with Sheep
Across the road, the girl was still crying, her high singsong tongue strange to Dany’s ears. The first man was done with her now, and a second had taken his place.
“She is a lamb girl,” Quaro said in Dothraki. “She is nothing, Khaleesi. The riders do her honor. The Lamb Men lay with sheep, it is known.”
“It is known,” her handmaid Irri echoed.
“It is known,” agreed Jhogo, astride the tall grey stallion that Drogo had given him. “If her wailing offends your ears, Khaleesi, Jhogo will bring you her tongue.” He drew his arakh. (AGOT Daenerys VII)
Evil Ghosts Feast by Night
Her riders were not long in returning. Rakharo swung down from his saddle. From his medallion belt hung the great curving arakh that Dany had bestowed on him when she named him bloodrider. “This city is dead, Khaleesi. Nameless and godless we found it, the gates broken, only wind and flies moving through the streets.”
Jhiqui shuddered. “When the gods are gone, the evil ghosts feast by night. Such places are best shunned. It is known.”
“It is known,” Irri agreed. (ACOK Daenerys I)
Shadows
“Truth,” said the woman in the mask. And bowing, she faded back into the crowd.
Rakharo snorted contempt through his drooping black mustachios. “Khaleesi, better a man should swallow scorpions than trust in the spawn of shadows, who dare not show their face beneath the sun. It is known.”
“It is known,” Aggo agreed. (ACOK Daenerys III)
Walls
“When cowards hide behind great walls, it is they who are defeated, Khaleesi,” Ko Jhogo said.
Her other bloodriders concurred. “Blood of my blood,” said Rakharo, “when cowards hide and burn the food and fodder, great khals must seek for braver foes. This is known.”
“It is known,” Jhiqui agreed, as she poured. (ASOS Daenerys V)
You Must Not Touch the Dead
“Khaleesi,” whispered Irri, “you must not touch the dead man. It is bad luck to touch the dead.”
“Unless you killed them yourself.” Jhiqui was bigger-boned than Irri, with wide hips and heavy breasts. “That is known.”
“It is known,” Irri agreed. (ADWD Daenerys I)
A Khaleesi Must Have a Khal
“Only half a hundred times,” Dany teased. “You gave up too easily, my lord. For I must marry, all agree.”
“A khaleesi must have a khal,” said Irri, as she filled the queen’s cup once again. “This is known.”
“Shall I ask again?” wondered Xaro. (ADWD Daenerys III)
Unlucky Number Thirteen
“Xaro Xhoan Daxos has offered me thirteen galleys,” she told Irri and Jhiqui as they were dressing her for court.
“Thirteen is a bad number, Khaleesi,” murmured Jhiqui, in the Dothraki tongue. “It is known.”
“It is known,” Irri agreed. (ADWD Daenerys III)
Cannibalism
“Man must not eat the flesh of man,” said Aggo.
“It is known,” agreed Rahkaro. “They will be cursed.”
“They’re past cursing,” said Symon Stripeback. (ADWD Daenerys VI)
You Must Not Touch the Dead 2
“It is not good to touch the dead,” said Jhogo.
“This is known,” Aggo and Rakharo said, together.
“That may be so,” said Dany, “but this thing must be done, all the same.” She thought a moment. “The Unsullied have no fear of corpses. I shall speak to Grey Worm.” (ADWD Daenerys VI)
Rakharo Does Not Bed with Boys or Cows
When Daenerys returned to her pyramid, sore of limb and sick of heart, she found Missandei reading some old scroll whilst Irri and Jhiqui argued about Rakharo. “You are too skinny for him,” Jhiqui was saying. “You are almost a boy. Rakharo does not bed with boys. This is known.” Irri bristled back. “It is known that you are almost a cow. Rakharo does not bed with cows.” (ADWD Daenerys VI)
Walls 2
“With their hands,” said Missandei. “The bricks are old and crumbling. They are trying to claw their way into the city.”
“This would take them many years,” said Irri. “The walls are very thick. This is known.”
“It is known,” agreed Jhiqui. (ADWD Daenerys VI)
Belaquo Will Win and Die
Hizdahr looked confused. “There is more to come. A folly, six old women, and three more matches. Belaquo and Goghor!”
“Belaquo will win,” Irri declared. “It is known.”
“It is not known,” Jhiqui said. “Belaquo will die.”
“One will die, or the other will,” said Dany. “And the one who lives will die some other day. This was a mistake.”(ADWD Daenerys IX)