Hadith.5120 - It has been narrated that Commander of the Faithful عليه السلام was presented with a grave robber.
Imam عليه السلام grabbed him by his hair, struck him against the ground, and then said: "Step on him, O' servants of Allah سبحانه وتعالى." So, the people trampled him until he died.
As for a runaway slave (Abd abiq), if he steals, his hand is not to be cut off. Similarly, an apostate (murtadd) who steals is not to have his hand cut off immediately.
However, the slave is to be called to return to his master, and the apostate is to be called to return to Islam. If either of them refuses, then his hand is to be cut off for the theft, and afterward, he is to be executed.