Only religious beliefs and ethical principles...

Only religious beliefs and ethical principles, particularly in Islam, containing extensive and considerable instructions for achieving this objective, as one of its great privileges, can penetrate into these areas and make it safe. Qur’an explicitly instructs the believers: يَا أَيُّهَا الَّذِينَ آمَنُوا اجْتَنِبُوا كَثِيرًا مِنَ الظَّنِّ إِنَّ بَعْضَ الظَّنِّ إِثْمٌ O ye who believe! Shun much suspicion; for lo! some suspicion is a crime.

(49:12) The phrase "most of suspicion" may indicate that a major part or most of the suspicions of people about each other are "evil ones", and thereby Qur’an warns people about the great risk threatening their security in the minds of others, and has introduced it as a "general affection site".

However, the phrase "some suspicion is a sin", considering its previous phrase, may indicate that suspicions of people about each other may be partly based on the reality, but surely a part of them is against reality, as a sin and disobedience. Thus, intellect orders to avoid all types of suspicion for not being affected to this part.

In the Islamic traditions too, it is so emphasized on avoidance from suspicion on the believers that we read in a tradition from Prophet (S): «اِنَّ اللهَ حَرَّمَ مِنَ الْمُسْلِمِ دَمَهُ وَ مالَهُ وَ عِرْضَهُ وَ اَنْ یُظَنَّ بِهِ ظَنَّ السُّوءِ».

God has forbidden blood, wealth, reputation and suspicion about a Muslim.[^1] This tradition is particularly noteworthy since it has placed security in four aspects (financial, life, reputation, and mental) besides each other, and has forbidden all of them in a single phrase.

Sources of suspicion and pessimism Suspicion and pessimism in mental view may appear sometimes lightly and sometimes acutely and severely, that is as a mental disease , and anyway it could be the effect of various causes, including: 1- It often happens that source of suspicion is the sense of revenge and malice and envy, and since a man can not take vengeance practically on the other person, and or express it by his tongue, so he retreats to the areas of mind and heart, and causes a sedition there, trumps up him, and judges and rebukes and blames him, and thereby seeks relief of his mind.

That is to say whatsoever he could not find outwardly, he seeks in his mind and imaginations, and on this account, and he feels a sort of false enjoyment and tranquility from his action.

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