Whistling into the wind invites sorrow

There isn't a child in Aernadael that hasn't been told that whistling into the wind invites sorrow into your life or home. As with most traditional wisdom, there is a lot of argument as to the veracity of the claim.
Pazuzu,, Shu, Kari, and Baalshamin are all spirits of the wind and sky who are known to be easily offended, so they may be the origin of this tale. Pazuzu and Naalshamin served Nyx during the Age of Night, so they may have been the true cause of this story.

Summary

The earliest know recording of this truism is in the tales of Garin, the Shadow Keeper:
One night, as Garin stood his post, he watched between the twinkling stars for any sign of Nyx's hand reaching out to wipe their village off the map like so many crumbs off a table after a child has feasted on cookies and cakes. He laughed into the night at his own cleverness and puffed his chest at the devil moon over head. No one knew the moon's loyalty, but Garin felt the moon's mocking gaze fix on him too often to trust lesser sphere to do anything other than shine in the night, which it couldn't even manage to do on a consistent basis.
What kind of celestial light hid its face from the world more than it allowed its full glory to be on display. "If I were the moon," Garin said to himself, "I would outshine the sun and give light to all the world."
The moon, for its part was unimpressed by Garin, but didn't think it was worth his time to say anything about it.
Garin was well trained in the magical arts, but training doesn't bring wisdom, though he didn't know the difference. He knew the great law, "All things sown to the wind, grow it one reaps the whirlwind," but paid the truth no mind as he went about his patrol. In his mind, the laws of magic only mattered for the craft. He forgot, or never understood, that all life is magic and craft.
As the soft night breeze blew in his face, carrying the secrets and dreams of the world in its loving arms, Garin whistled a wistful song of his homeland and imagined a world with no need for guards and sentries. Nothing for him to do but to play long into the night without a care in the world.
The night wind heard his wish and listened to the tender song of love and loss Garin whistled into the wind. Taking pity on the Shadow Keeper, the night wind granted his wish.
A deep melancholy washed over Garin as the gentle night wind took away all his cares and concerns.
Garin wondered why he stood on this wall when he was so tired. What was the point of guarding their village at all. They were small and far from any major thoroughfare. They possessed no precious resources and made nothing to support the war. Why would anyone care about them? They weren't special in any way.
Leaving his post, Garin returned to the guard town. He didn't go to bed, because he felt he should at least sit through his watch, but the chair relaxed his weary legs. The tower was warm and the night quiet and still.
In the distance, wolves howled, but they would never make it through the wall. Their song was haunting and beautiful and lulled him off to sleep.
The crash of breaking stone jolted him from his sleep.
Garin ran to the wall. The army of Nix surrounded the village.
Sorrow flooded through him as the stones cracked and wall weakened. Garin rushed to the top of the tower to ring the bell, which was barely louder than the sound of the rams against the stone.
The tower gave way under his feet.
Garin awoke in the smoke and ash of what had been his him. He wanted to cry, but he found no tears to release into the world. No true feeling at all, only the absence of what had once been. He whistled into the wind to reap nothing but sorrow. He swore to himself he would one day break the spell of the night wind and avenge his villages ruin.

Historical Basis

There is little evidence that Garin was a real person, but so many villages were destroyed during the Age of Night such tales of complacency and ruin were common.
The moral that survived this story and the many that followed was simple, Whistling into the wind invites sorrow.

Spread

The story spread throughout Europe, but set into Aernadael to make where it is most commonly repeated.

Variations & Mutation

The motivation of the wind varies from retelling to retelling, some see the wind as a trickster, others as a malicious or vengeful spirit. One version actually names Pazuzu as the spirit who cursed Garin.
One prominent early version of this story claims that the wind was a servant of Dark Lady Rhamnusia, the daughter of Nyx that carried news to her and punished those who worked against her mother.

Cultural Reception

Many a child has been slapped for whistling in the wind out of fear they might bring harm to the family. Even in families that would never hit their children. There is so much fear in Aernadael surrounding this belief.
The terror of offending the wind runs deep in Sith Thyrsa culture.

Date of First Recording

624 CE

Date of Setting

495 CE