Sahih Muslim Book - 43, Hadith - 6116

حَدَّثَنَا يَحْيَى بْنُ يَحْيَى ، أَخْبَرَنَا إِبْرَاهِيمُ بْنُ سَعْدٍ ، عَنِ ابْنِ شِهَابٍ ، عَنْ عَامِرِ بْنِ سَعْدٍ ، عَنْ أَبِيهِ ، قَالَ : قَالَ رَسُولُ اللهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ : إِنَّ أَعْظَمَ الْمُسْلِمِينَ فِي الْمُسْلِمِينَ جُرْمًا ، مَنْ سَأَلَ عَنْ شَيْءٍ لَمْ يُحَرَّمْ عَلَى الْمُسْلِمِينَ ، فَحُرِّمَ عَلَيْهِمْ مِنْ أَجْلِ مَسْأَلَتِهِ.

It was narrated from ‘Amir bin Sa’d that his father said: ‘The Messenger of Allah (s.a.w) said: ‘The greatest sinner of the Muslims among the Muslims is the one who asks about something that was not forbidden to the Muslims, but it became forbidden to them because of his asking.”’