Note that according to the Shia...
It is to their advantage to portray the Prophet (PBUHH) as a man who listens to music and watches a dance with his wife, to justify the dancing and the music that was (and still is) rampant in their palaces. The current state of the Ummah is not because a few of us aren’t praying or fasting,; it is because some people have changed and mutilated the religion of Almighty Allah to satisfy their lusts, just like the Christians and Jews did. That’s exactly what we have fallen into.
We sin, then we say: so what — the Prophet (PBUHH) himself was a sinner! Purified be the Prophets and Messengers of Almighty Allah from being of such a sinful nature! By Allah, to say such a thing is more of an insult to Allah, than it is to the Prophet and Messengers. Because when we assert that Allah sends forth sinful men, we are claiming that Almighty Allah Himself approves of sin; or why, then, would he send forth a sinful man?
Yet, on the other hand, Almighty Allah forbids us from doing evil! What kind of twisted logic is this? Exalted be Almighty Allah from such an insult! Infallibility According to the Shia The Shia, on the other hand, state that ALL the Prophets and Messengers of Allah, with NO exception, are sinless and infallible, even before they became Prophets and Messengers.
For instance, although (PBUHH) became Messenger at the age of forty, the Shia assert that even in the first forty years of his life, he was sinless and infallible — an assertion that history attests to as well. It is indeed frustrating to conceive of a human being who is NOT sinful.
So, let us first define the concept of infallibility: The Concept of Infallibility According to the scholar Muhammad Jawad Mughniyah (May Allah rest his soul in peace), in his book “al-Islam Wa al-‘Aql — Islam and Reason,” the concept of Ismah (Infallibility) is very often misunderstood. What we mean by that concept is that a Prophet, by virtue of his prophethood, has a pure soul.