What ways Morgiana save Ali Baba's life everytime from the thieves?

Morgiana saves Ali Baba a total of four times. The first two times, she uses the same method. The thieves mark Ali Baba’s house twice in their attempts to kill him, first with a symbol and secondly by chipping some material from the house. Morgiana repeats the symbol and the chip in a similar manner on all the houses in the neighborhood to confuse the thieves.

The third time, she saves Ali Baba’s life by pouring boiling oil on the thieves that have hidden in 37 oil jars. The fourth time, she stabs the leader in the heart when he attempts to kill Ali Baba himself. The first and second times, Ali Baba is unaware of the danger. The third and fourth times, Morgiana reveals what had prompted her to act.