five rakʿahs with them, and when he had concluded the prayer, they said to him, “[O Messenger of Allah] (1), has something been added to the prayer?” He replied, “What is that?” They said, “You prayed five.” “[He then said …]”—and the hadith continues (2).
As for the Rāfidah, they resemble the Christians. Allah Most High commanded people to obey the messengers in what they commanded and to believe them in what they reported, and He forbade creation from religious excess and associating partners with Allah. Yet the Christians altered Allah’s religion: they went to excess concerning Christ and associated partners with Allah through him. They altered his religion, disobeyed him, and exalted him, thereby becoming sinners through their disobedience to him.
They carried their excess concerning him so far that they departed from the two foundations of religion: acknowledging Allah’s oneness and acknowledging the divine mission of His messengers:
“I testify that there is no deity worthy of worship except Allah, and I testify that Muhammad is His servant and Messenger.”
Their excess took them outside monotheism until they professed the Trinity and union with God. It also took them away from obeying and believing the Messenger, for he commanded them to worship Allah, his Lord and theirs. They belied him when he said that Allah is his Lord and theirs (3), and they disobeyed what he commanded them to do.