Midrash sur La Genèse 40:2

We are taught that Rabban Simon b. Gamaliel said: "For a baby, one day old, if it still have life, it is allowed to violate the Sabbath if necessary, for the Torah said, 'You may profane one Sabbath on his behalf, in order that he may be preserved to keep many Sabbaths.' No one is however allowed to profane the Sabbath for the sake of David, the King of Israel, if dead; for as soon as a man dies, he is freed from the commandments." This is in accordance with the saying of R. Jochanan: "It is written (Ps. 88, 6) Free among the dead, i.e., as soon as a man is dead, he is free from all commandments." Again it was taught that R. Simon b. Elazar said: "A live baby, even but one day old, need not be watched for fear of an attack by a cat or a mouse; but Og, the King of Bashan [although the largest man in the world] if dead, must be watched for fear of an attack by a cat or a mouse, for it is said (Gen. 9, 2.) And the fear of you and the dread of you. shall be, i.e., as long as a man (shall be) his fear will be thrown upon the beasts, but when dead, the fear of him ceases." R. Papa said: "We have a tradition that a lion does not attack two men." But we see that he does do so? Rami b. Chama said: "A beast cannot succeed in destroying a man unless the man looks like a beast, for it is said (Ps. 49, 21.) Nevertheless man in (his) splendor endureth not; he is like the beasts (that) perish."