You know, from the Holy Quran and from the tradition of our Huzoor sallallahu alaihi wa sallam and his practice, all that we know is that the Muslims should be buried. Nowhere in the remotest there is a mention that any Muslim was ever cremated. Or in the Holy Quran there is no mention of other prophets who got cremated or who permitted their followers to be cremated after death. So that is against the practice of Islam.