"If one of you would be asked of what he does not know he must say...
"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 say, "I do not know his audience will not accuse him of anything." H 101, Ch. 11, h 7 Al-Husayn ibn Muhammad has narrated from Mu'alla ibn Muhammad from Ali ibn Asbat from Ja'far ibn Sama'a from several persons, from aban, from Zurara ibn A'yan who has said the following.
"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.'" H 102, Ch. 11, h 8 Ali ibn Ibrahim has narrated from his father from ibn abu 'Umayr from Yunus (ibn 'Abd al- Rahman) from abu Ya'qub Ishaq ibn 'Abdallah from abu 'Abdallah (a.s.) who has said the following.
"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 well? They call a lie something that is beyond the limit of their knowledge and whose interpretation has not yet been revealed . . ." (10:39) H 103, Ch.
11, h 9 Ali ibn Ibrahim has narrated from Muhammad ibn 'Isa from Yunus from Dawad ibn Farqad from one he narrated from ibn Shubruma (a judge in al-Kufa during the rule of al-Mansur) who has said the following.
"I never heard any thing like a statement I heard from Imam abu 'Abdallah (a.s.) and it is almost as he said, 'Pierced my heart.'" The Imam (a.s.) said, "My father narrated from my great-great-great-great grandfather, the holy Prophet (s.a.) who said, 'Those who act on the basis of analogy will face their destruction and lead others to their destruction.
Those who give fatwas without the knowledge of the abrogating and the abrogated, the clear text and that which requires interpretation, they will face destruction and lead others to their destruction." Chapter 12 : Chapter on Those who Act without Knowledge H 104, Ch. 12, h 1 A number of our people have narrated from Ahmad ibn Muhammad ibn Khalid from his father from Muhammad ibn Sinan from Talha ibn Zayd who has said the following.
"(Imam) abu 'Abdallah (a.s.) has said, 'Working without understanding and insight is like travelling in the wrong direction that only takes one farther away from the destination.'" H 105, Ch.