In Norse mythology, Thiazi was a storm giant who kidnapped Idun, the goddess of youth. Without her apples, the Aesir began to grow very old. Loki intervened by changing her into a nut and rescuing her. In Jotunheim, he lived in a palace called Thrymheim.
... (in/at/by them) at the end of the second line is in locative
plural. Translated: "...in them".
History
Sanskrit is the oldest member of Indo-Aryan[?] ...