Mpu Gandring asked Ken Arok to be patient first and wait as agreed at the beginning. But it was not accepted by Ken Arok, he still insisted on taking the unfinished keris.
An argument broke out between Mpu Gandring and Ken Arok, until finally the kris was stabbed into Mpu Gandring's body. Mpu Gandring was killed instantly with his own dagger. Ken Arok succeeded in proving that the keris was sacred by being able to kill the maker with one stab. The keris can also break Mpu Gandring's stone mortar. In a condition that has died, Mpu Gandring also cast a curse on Ken Arok. Mpu Gandring gave an oath and cursed that the keris would kill seven of Ken Arok's descendants, including Ken Arok himself.