How the GOD VISHNU got the SUDERSHAN CHAKAR

Once the demons became very strong and they defeated the DEVTAS in war. Even the GOD VISHNU was not able to kill them. Then the GOD VISHNU started worshipping the LORD SHIV by having 1000 lotus and started worshiping by offering one lotus and chanting one name of the LORD SHIV. But in the mean time the LORD SHIV just to test the GOD VISHNU remove one lotus and hide that. When the GOD VISHNU found that one lotus is missing then He started searching it. He went to all the places in the universe but did not find that lotus any where. But His wish to worship was very strong and ultimately GOD VISHNU offered His one of the eye ball and completed His POOJA. Looking at this the LORD SHIV becomes very happy and came there and asked the GOD VISHNU about His desire. Then the GOD VISHNU told LORD SHIV about the position and requested to HIM to give Him such powers so that He could end the region of terror created by the demons. Then the LORD SHIV gave HIS one of the most powerful weapon called the SUDERSHAN CHAKAR to the GOD VISHNU. GOD VISHNU killed the demons with that SUDERSHAN CHAKAR and from that day onwards the SUDERSHAN CHAKAR becomes the weapon of the GOD VISHNU.