A believer must realize that any human being can be equal to or better than Muhammad, Jesus, or Moses.1, 2, 3, 4
The prophets the Quran names as specially honored by God are Abraham, Moses, Jesus, and David, not Muhammad; Moses was honored by God speaking to him and Jesus by being born a prophet.1, 2, 3, 4
The Quran tells the messenger to say he is no different from other messengers, has no idea what will happen to him or others, and only follows what is revealed to him.1, 2, 3
Calling Muhammad the most honorable messenger breaks the commandment in verse 2:285 not to make any distinction among God's messengers, and a religious scholar who does so is out of God's mercy and unguided.1, 2, 3, 4
A messenger is not different from other messengers, does not know what will happen to him or to others, and only follows what is revealed to him.1, 2, 3
The Quran forbids making distinction among the prophets, so what is required of anyone is to declare that there is no god except God, not to add a prophet to that declaration.1, 2, 3
We must believe in all the messengers without making distinction; a verse mentioning one specific thing does not exclude others.1, 2, 3
Like a message heard on different brands of radio, what matters is the message delivered, not the particular messenger who delivers it.1, 2, 3, 4
Making distinction among messengers, such as adding Muhammad's name to God's, breaks a commandment.1
The Quran calls for unity among all believers and repeatedly prohibits distinguishing among God's messengers; worshiping the same one God brings absolute unity.1, 2
Verse 42:13 explains the hostility: God decreed the same religion for Noah, Abraham, Moses, Jesus and Muhammad, and idol worshipers resent the call to worship God alone.1, 2, 3, 4
The message has been the same from Adam until now.1
Since most people are yet to come, it makes sense that a messenger should come to unite the message, clear out falsehood and innovations, and join the messages of all prophets.1, 2, 3
After the commandment not to make distinction among the messengers, the believers say we hear and we obey, while those who argue about it are insisting on going to hell.1, 2, 3
According to Quran 3:81, after all the prophets deliver their messages, God sends the messenger of the covenant to consolidate and purify them into one unified religion acceptable to God.1, 2, 3
Adding Muhammad to the shahada violates the Quran's most basic commandments: it puts another name beside God and makes distinction among God's messengers, and a Muslim who makes such distinction is not a Muslim.1, 2, 3, 4
Those who truly love Muhammad should obey him, and he told them not to distinguish among messengers and that the shahada is there is no god but God.1, 2