The ruling on one who throws the jamarat while facing backward

Question : Is the order of the jamarat obligatory? What if one throws them while facing backward?

Answer : We say that if one throws them while facing backward intentionally, he is playing with them, so his throwing is not valid. As for if he throws them out of ignorance, if it is possible for him to make up for it, such as if he learns the ruling while he is still in Mina, then we say: go now and throw the middle pillar and the Aqabah. Why? Because the first one was thrown, so he throws the middle and the Aqabah because that is the one that was not in its proper place. As for if the Hajj has ended and he cannot repeat it in a valid manner, he is excused in that and nothing is required of him.