Suspicion - Prohibition of negative assumptions in the Holy Quran

(154) Then after distress, He sent down upon you security [in the form of] drowsiness, overcoming a faction of you, while another faction worried about themselves, thinking of Allah other than the truth - the thought of ignorance, saying, "Is there anything for us [to have done] in this matter?" Say, "Indeed, the matter belongs completely to Allah." They conceal within themselves what they will not reveal to you. They say, "If there was anything we could have done in the matter, some of us would not have been killed right here." Say, "Even if you had been inside your houses, those decreed to be killed would have come out to their death beds." [It was] so that Allah might test what is in your breasts and purify what is in your hearts. And Allah is Knowing of that within the breasts.

(116) And if you obey most of those upon the earth, they will mislead you from the way of Allah. They follow not except assumption, and they are not but falsifying.

(128) And [mention, O Muhammad], the Day when He will gather them together [and say], "O company of jinn, you have [misled] many of mankind." And their allies among mankind will say, "Our Lord, some of us made use of others, and we have [now] reached our term, which you appointed for us." He will say, "The Fire is your residence, wherein you will abide eternally, except for what Allah wills. Indeed, your Lord is Wise and Knowing."

(36) And most of them follow not except assumption. Indeed, assumption avails not against the truth at all. Indeed, Allah is Knowing of what they do.

(60) And what will be the supposition of those who invent falsehood about Allah on the Day of Resurrection? Indeed, Allah is full of bounty to the people, but most of them are not grateful."

(66) Unquestionably, to Allah belongs whoever is in the heavens and whoever is on the earth. And those who invoke other than Allah do not [actually] follow [His] "partners." They follow not except assumption, and they are not but falsifying

(12) O you who have believed, avoid much [negative] assumption. Indeed, some assumption is sin. And do not spy or backbite each other. Would one of you like to eat the flesh of his brother when dead? You would detest it. And fear Allah; indeed, Allah is Accepting of repentance and Merciful.

(28) And they have thereof no knowledge. They follow not except assumption, and indeed, assumption avails not against the truth at all.