That "Allah has prohibited the earth from consuming the bodies of the Prophets" means that the earth does not consume them. That "their Salat (salutations) will be presented to him" indicates that angels present the salutation performed to him, as is elucidated in other Ahadith. Moreover, his soul is then returned to him and he answers the salutations also. (In the opinion of Muhaddithun, the Hadith relating to the return of the soul comes in the category of "Hadith Hasan", i.e., it is acceptable).