Muhammad claims to be the prophet of God promised by Jesus to come after His ascension to Heaven. Muhammad claims that he is the last prophet of God. “And I will pray the Father, and He will give you another Helper, that He may abide with you forever.” (John 14:16). Again, this is an illegitimate claim. The Holy Spirit is the one promised by Jesus to come after Him. “But the Helper, the Holy Spirit, whom the Father will send in My name, He will teach you all things, and bring to your remembrance all things that I said to you.” (John 14:26). The Holy Spirit came on Pentecost, and the Bible does not promise any other prophets to come. For reference to this read: The Bible, John 14:16-26 ff.