Norse vs Hindu Mythology: Immortality Elixirs - Apples and Amritha

Norse gods weren't exactly immortal like in other mythologies, and were more or less superpowered mortals that could die(see Baldur as an example). They relied on apples from the goddess Idun, which restored them to youth and gave them strength. Thiazi was a very powerful mountain giant, and Loki, as we know, a trouble maker, offended Thiazi(why don't they just kick him out of Asgard, I will never know). Thiazi told Loki that in order to appease him, he would have to lure Idun out of Asgard and bring her to him so that he could have the supply of immortality apples(wouldn't the apples be in like an orchard or something and make this pointless?). Loki agreed, and started his plan. He first told Idun that he discovered apples that appeared better than hers, and she came with him, wanting to see how these incredible apples that were somehow better than hers were planted(and once again the orchard idea occurs). Thiazi then came and kidnapped her, taking her to his lair. Loki returned to Asgard, but all the gods realized his involvement and forced him to fix the situation. Loki transformed into a falcon and flew back to Thiazi's lair. He then had Idun go into a magical nut that would encompass her as they traveled. However, Thiazi realized the trick and turned into an eagle, chasing the falcon(Loki) and the nut(Idun), but somehow forgot that Asgard would have prepared for him. There was a massive pile of wood shavings at the gates of Asgard, and right as Loki passed through, they set fire to it, leaving Thiazi to burn and die.

Garunda was an eagle, but his mother was in servitude to two snakes(wouldn't an eagle eat snakes?), who demanded that in order for his mother to be freed, he would need to get Amritha, the immortality elixir of the gods. He was able to achieve this by challenging the gods to competitions with his skills and proving himself and then proceeding to offer services to Vishnu and Indra(king of the gods). Indra agreed to give Garunda the Amritha, but told him that he should trick the snakes such that they free his mother, then leave for a bit so that Indra could take the Amritha back. Garunda agreed, and brought it down. The snakes freed his mother, and he told them that they ought to take a batch and cleanse themselves before consuming the elixir. They took his advice and went to the river to bathe themselves, while Indra took back the Amritha. When the snakes came back, they only found droplets of the elixir, and tried to lick it off the grass(ew that's disgusting why would you ever eat off the lawn). It split their tongues in two, but did give them some hints of immortality. Snakes forever onwards shed their skin, getting new skin anew and becoming youthful, although not remaining immortal.

So, now we have our compare, contrast, and conclusion. So why are these similar? Both involve stupid villains that actually do what they promise to do(unlike any actual villain in real life), that get their stuff, and then get double crossed when their plan works perfectly. So, what's the thing to learn from these stories? Always read your contracts a couple times, and make sure to watch out for the double crossers.

If you want your milk(immortality elixir), eat the milkman(Idun/Indra).