Ishtar's most famous myth is the story of her descent into the underworld, which is largely based on an older, more elaborate Sumerian version involving Inanna.
In the standard Akkadian version of the Epic of Gilgamesh, Ishtar is portrayed as a spoiled and hot-headed femme fatale who demands Gilgamesh become her consort.
When Belili heard the lament of her brother, she dropped her treasure, She scattered the precious stones before her, "Oh, my only brother, do not let me perish!
On the day when Tammuz plays for me on the flute of lapis lazuli, playing it for me with the porphyry ring.
Ea creates an intersex being called Asu-shu-namir and sends them to Ereshkigal, telling them to invoke "the name of the great gods" against her and to ask for the bag containing the waters of life.
Ereshkigal becomes enraged when she hears Asu-shu-namir's demand, but she is forced to give them the water of life.
Together with him, play ye for me, ye weepers and lamenting women!
She was associated with the planet Venus and subsumed many important aspects of her character and her cult from the earlier Sumerian goddess Inanna.
You struck and turned him into a wolf; now his own herd-boys chase him away, his own hounds worry his flanks." ...break in the doors of hell and smash the bolts; there will be confusion [i.e., mixing] of people, those above with those from the lower depths.
I shall bring up the dead to eat food like the living; and the hosts of the dead will outnumber the living." including Aja (eastern mountain dawn goddess), Anatu (a goddess, possibly Ishtar's mother), Anunitu (Akkadian light goddess), Agasayam (war goddess), Irnini (goddess of cedar forests in the Lebanese mountains), Kilili or Kulili (symbol of the desirable woman), Sahirtu (messenger of lovers), Kir-gu-lu (bringer of rain), and Sarbanda (power of sovereignty).
Asu-shu-namir sprinkles Ishtar with this water, reviving her.
Then, Ishtar passes back through the seven gates, receiving one article of clothing back at each gate, and exiting the final gate fully clothed.