وَالْإِثْمُ مَا حَاكَ فِي نفْسك، وَكَرِهْت أَنْ يَطَّلِعَ عَلَيْهِ النَّاسُ
And sin is that which occurs in your soul and you hate that the people
should come to know about it.
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(Taken from Hadeeth 27 of Nawawi’s 40. Muslim)