en_tn/est/08/10.md

wrote in the name of King Ahasuerus

Writing something in the king's name represents writing it with his authority, or writing it as his representative. (See: rc://en/ta/man/jit/figs-metonymy)

signet ring

See how you translated this phrase in Esther 8:2

the letters

You may need to use a word for written instructions that is more general than "letter" so that the reader does not think that these documents were about only personal matters.

couriers

people who carry messages

bred from the royal stud

The royal stud was the king's best male horse. The horses that were used in the king's service were its offspring. Alternate translation: "the offspring of the king's best horse" (See: rc://en/ta/man/jit/figs-explicit)