The true Muslim may not abandon the prayer
Islam has threatened those who abandon the prayer with the painful suffering and great loss in this world and in the Hereafter, including the torment in the fire on the Day of Resurrection
Allah said ( interpretation of the meaning ) : { Every soul, for what it has earned, will be retained Except the companions of the right, [Who will be] in gardens, questioning each other About the criminals, [And asking them], "What put you into Saqar?" They will say, "We were not of those who prayed, Nor did we used to feed the poor. And we used to enter into vain discourse with those who engaged [in it], And we used to deny the Day of Recompense Until there came to us the certainty." So there will not benefit them the intercession of [any] intercessors. }
Quran ( 74 : 38 - 47 )