Mishkat al-Masabih #2231

Anas reported God’s messenger as saying, "God is more pleased with the repentance of His servant when he turns penitently towards Him than one of you would be if his riding-beast which was carrying his food and drink escaped from him in a waterless desert and he, despairing of recovering it, went and lay down in the shade of a tree, then suddenly saw it standing beside him and, seizing its halter, said from excess of joy, ‘O God, Thou art my servant and I am Thy lord’, making a mistake from excess of joy.” Muslim transmitted it.