please no sir,
Since I believe in Allah's existence, I believe we will be punished/rewarded in our hereafter,
Karma is a little different thing, it is believed by the Hindus/Buddah that what ever they have today, is due to their past life, but there is no previous life activity for Muslims believers. Allah created us, now trialing us, and will reward/punish us in hereafter, there is no incarnation/previous life activity as believed by the Muslims. There is no circle of life as hindus believe, but just creation of human, trial of human and endless the hereafter. Muslims will not born again, but will be brought into alive from the death before dooms day for sending to hereafter