The Sumerian poem about Ninurta's heroic exploits. This story was possibly the prototype for the later Babylonian myth about Ninurta and Anzu (see Epic of Anzu).
Like The Return of Ninurta to Nibru, the poem praised Ninurta, before the actual story begins.
Ninurta was in his home and on his throne, where his fabulous weapon, Sharur, called him the offspring of the Mountains, compared him to the great wild bull. Yes, Ninurta's weapon can talk, as well as having the ability to fly; it has wings. Sharur is possibly a mace-like weapon.
But Sharur also revealed to Ninurta that a recently-born creature known as the Asag is challenging the gods, particularly to him (Ninurta). The Asag is the Mountains, had raised his own throne dais, as rival to that of Ninurta's. Out of fear, people are now making offerings to the Asag, as if it was a god. Sharur mentioned that the Asag was invulnerable to weapons, such as the axe and spear.
Sharur called upon Ninurta to fight the Asag, because only he has physical strength to defeat this creature, or else the creature will displace Ninurta as king. The Asag had already conquered many territories with his rising armies. His weapon encouraged Ninurta to confront the Asag.
Ninurta was angry that the Asag dares to challenge him. And his anger frightened the Anunnaki gods. Ninurta left his home, to seek battle with the Asag. He was armed with his powerful lance and mace; his other weapons are the throw-stick and shield. And whenever he takes just one step, he would have travelled a league in distance.
His passage through the country had brought wild winds and storms. Upon arriving at the rebel Mountains, Ninurta killing Asag's two messengers, destroying cities, frightening the surviving populace. He also sends poisonous gas into the rebel's lands.
The Sharur had previously egged Ninurta to fight against Asag, was now trying to discourage Ninurta from this encounter. Sharur mentioned some of his deeds and those who he had slain, many of them already listed in the Return of Ninurta to Nibru (like the six-headed ram, dragon, anzu, etc), but also the Kuli-ana, Lord Saman-ana and the Palm-tree King, but the Sharur now believed that Ninurta won't win against the Asag.
Ninurta, however, refused to be discouraged and dissuaded on confronting the Asag, so he continued to the Mountains. But Asag was not fearful of the god, and immediately leap at Ninurta. The Asag had being compared to a mad dog, a storm and gigantic serpent. Asag attacked Ninurta with not just only fury, but with loud roars that can be heard in heaven and on earth, and frightened the gods, Anunnaki, including An and Enlil. Asag caused the water to dry up in the Mountains. Enlil was concern for his son.
Somehow, Sharur had managed to protect Ninurta; eveloping him in some sort of aura. The Sharur informed Enlil that he had protected the god's son, and had some obsecure instructions for Enlil to help Ninurta.
The weapon returned to the rebel Mountains and rejoined its master. Sharur informed its master that the Asag had erected a wall of stakes, and again, encouraged Ninurta to attack Asag.
Ninurta aimed his lance at the Mountains, and wave his arm towards the cloud, and day became night. He struck the mountains with his cudgel. Sharur caused stormy winds, while the mace caused fire. Ninurta fixed the lance into ground, which caused it to bleed. Even after all of these demonstrations of Ninurta's powers, they didn't cower Asag.
The Sharur then informed its master against confronting Asag's hurricane on the mountains. Again, Sharur tried to dissuade Ninurta from fighting Asag, calling his master to turn back.
Ninurta refused to turn back. He struck all enemies he had come across with his mace. He finally confronted Asag, and pounded his rival to death. Ninurta had reduced or transformed Asag into stone, or more precisely the zalag stone. The gods, who were terrified of Asag, now came to the mountains to pay homage to Ninurta, the perfect warrior. Sharur also praised its master.
But there was a heavy price for Ninurta's victory. Good, fresh water that usually come out of springs, they now didn't come up and water the fields and gardens. Without the Asag holding back the primeval water from the mountains, it rose up and floods the lands. The primeval water was colder and brought flood and destruction to the lands. The Tigris was contaminated by the primeval water. People could not work on the lands, canal or on irrigations.
It was left to Ninurta to find a solution to the new calamity that beset the lands. Ninurta went to the mountains of his former enemy and began piling rocks to create a wall or barrier to stop the flow of the primeval water from these mountains. He also installed a sluice, to control the flooding. Eventually fresh water returned to the Tigris and irrigations on the lands.
Nimah praised her son, and reminisced about the day that Enlil conceived a child in her womb. Ninurta hearing his mother's words, he blessed the goddess, dedicated the Mountains to Ninmah, and changed Nimah's name to Ninhursag, to commemorate his victory over the Mountains (Asag), so Ninhursag literally means "Lady of the Mountain". He also included the name Nintu to his mother. Ninurta had elevated his mother in both heaven and earth. Nimah replied to her son that Ninurta's will or decrees cannot be altered or unmade.
Then there is a long section of the poems, which deal with blessing and cursing some stones that were either helpful or unhelpful to Ninurta in his struggle against Asag. So he blessed stones, like esi stone, elel stone, kagena (haematite) stone, ginugal (alabaster) stone, dušia stone and zagin (lapis lazuli), etc. But the stones he cursed šu and gasura stones, gir-zu-gal (flint), etc, became either useless or worthless stones.
After all this, Ninurta boarded his boat, Ma-kar-nunta-ea, where his boatmen, praised and sang a song to their master, again to commemorate his victories. Then the boat floated downstream, while the Anunnaki bowed to Ninurta again, and Enlil blessed his son on the victory and on stopping the flood of primeval water. Because Ninurta had prevented further flooding, he became the god of farming, particularly of ploughing, and of irrigations.
Enlil also blessed Ninmah (Ninhursag) and Nisaba (Nissaba), goddess of wisdom and writing, before the poem finally ended.
It should be noted that this ancient myth of Ninurta, may have being the prototype for later Babylonian legend of Ninurta and the Anzu. Ninurta was the hero who not only defeated Anzu, but had also changed his mother name to Ninhursag, which is similar to this poem. The Babylonian god, Maduk, the hero of Enuma Elish (Epic of Creation), was most likely based on Ninurta.