In the Name of Allah, Most Gracious, Most Merciful
Allah Most High has said,
إِنَّ بَعْض الظَّنّ إِثْم
Verily, some suspicions are sins…
عَنْ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ حُسْنُ الظَّنِّ مِنْ حُسْنِ الْعِبَادَةِ
From Rasulullah [saws] who said, “To have good thoughts (or suspicions) is from well-conducted worship.” [abu dawood]
And our Beloved, sallallahu ‘alayhi wa sallam, reminded us,
إِيَّاكُمْ وَالظَّنَّ فَإِنَّ الظَّنَّ أَكْذَبُ الْحَدِيثِ وَلَا تَحَسَّسُوا وَلَا تَجَسَّسُوا وَلَا تَنَافَسُوا وَلَا تَحَاسَدُوا وَلَا تَبَاغَضُوا وَلَا تَدَابَرُوا وَكُونُوا عِبَادَ اللَّهِ إِخْوَانًا
“Avoid suspicion, for suspicion is the gravest lie in talk and do not be inquisitive about one another and do not spy upon one another and do not feel envy with the other, and nurse no malice, and nurse no aversion and hostility against one another. And be fellow-brothers and servants of Allah.” [sahih muslim]