Musa said: He says, Surely she is a cow not made submissive that she should plough the land, nor does she irrigate the tilth; sound, without a blemish in her. They said: Now you have brought the truth; so they sacrificed her, though they had not the mind to do (it).

And when he attained to working with him, he said: O my son! surely I have seen in a dream that I should sacrifice you; consider then what you see. He said: O my father! do what you are commanded; if Allah please, you will find me of the patient ones.