Conclusion: Those who i'iqtiqad or creed to disobey (mens rea, guilty mind), and intentionally disobey (actus reus, guilty act) the prohibition in the Quran is not a Muslim.
IF one i'qtiqad (creed) to obey all the "DO NOT" prohibitions in the Qur'an.
THEN he is a Muslim.
ELSE he is not a Muslim.
Facts comparision
Who is "Muhammad"?
I believe he is the most righteous person ever lived. He is a True Believer.
And indeed, you
are of a great moral character
(68:4)
But and even if he believe in Allah . . .
. . . recite shahada perfectly
. . . knows and speaks well in arabic
. . . perform salah
. . . pray in mosque
. . . pray every night to Allah
. . . perform hajj
. . . fasting for his entire life
. . . dzikr.. and never say bad things about people
. . . pay zakat and sadaqah all his property in the cause of Allah
. . . go to jihad and sacrifice himself to Allah
. . . ponder all verses carefully...
. . . and you name it, as one of the most righteous person ever lived...
He is not a Muslim if disobey one "simple prohibition" not to eat that on which Allah's name has not been mentioned
And DO NOT eat
of that on which Allah's name has not been mentioned
and that is most surely a transgression
and most surely the Shaitans suggest to their friends
that they should contend with you
and if you obey them
you (Muhammad) shall most surely be polytheists (ie. not a Muslim)
(6:121)
It is because Allah says "DO NOT" and it doesn't matter if it is small prohibitions. He can be the best Believer, but if he "i'qtiqad" (creed) to disobey Allah... he will not be a Muslim. Being a Believer and a Muslim is two different issues, and Allah only accept Muslim (obedience), with faith.. or without faith.
This is equally true with Prophet Adam AS, he (unintentionally) disobey one small prohibition not to eat from that tree, and he was disqualified from heaven. Therefore, the same rule is equally applied to us because we are not better than Adam AS or Muhammad SAW.
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