Prohibition on Speaking without Knowledge.

"I would like to warn you about two forms of behavior that lead a man to destruction. I prohibit you from dealing with Allah on the basis of falsehood and from giving fatwa to people without knowledge.”

“Imam abu ‘Abdallah (a.s.) has said, ‘Beware of two forms of behavior. It is such behaviors that have lead many people to their destruction. Beware of giving fatwa to people on the basis of your own opinion and to follow…

Whoever gives a fatwa (a religious verdict) to people without knowledge and guidance, the angels of mercy and the angels of punishment curse him. The burden of those who act upon his fatwa will fall upon him."

“What you know you may speak it up but what you do not know say, ‘Allah knows best’. A man refers to a verse in the holy Quran and gives it a meaning that is farther from the truth than the heavens are from earth.”

“It is very proper for a scholar to say, ‘Allah knows best’ if he does not know. This is not for a none scholar.”

“If one of you would be asked of what he does not know he must say, ‘I have no knowledge and he must not say, “Allah knows best” because it may create doubts in the hearts of his audience. If the person questioned would…

“I asked Imam abu Ja‘far (a.s.) this, ‘What are the rights of Allah on people?’” The Imam (a.s.) replied, “They must say what they know and abstain from saying anything that they have no knowledge of.’”

“Allah has addressed His servants in two verses of the holy Quran very particularly: Did they not make a covenant (with God) in the Book not to speak any thing other than the Truth about God and to study its contents…

I heard from Ja'far ibn Muhammad (as) except that my heart almost trembles." He said, “My father narrated from my grandfather that Rasulullah (sw) said, ‘Those who act on the basis of analogy (qiyas), will face their…