حَدَّثَنَا عَبْدُ اللَّهِ بْنُ يَزِيدَ الْمُقْرِئُ، حَدَّثَنَا سَعِيدٌ، حَدَّثَنِي عُقَيْلٌ، عَنِ ابْنِ شِهَابٍ، عَنْ عَامِرِ بْنِ سَعْدِ بْنِ أَبِي وَقَّاصٍ، عَنْ أَبِيهِ، أَنَّ النَّبِيَّ صلى الله عليه وسلم قَالَ ‏ "‏ إِنَّ أَعْظَمَ الْمُسْلِمِينَ جُرْمًا مَنْ سَأَلَ عَنْ شَىْءٍ لَمْ يُحَرَّمْ، فَحُرِّمَ مِنْ أَجْلِ مَسْأَلَتِهِ ‏"‏‏.‏

Narrated Sayyiduna Sa`d bin Abi Waqqas (May Allah be pleased with him):

The Prophet (ﷺ) said, "The most sinful person among the Muslims is the one who asked about something which had not been prohibited, but was prohibited because of his asking."

Sahih al-Bukhari 7289
Chapter 3: Asking too many questions and troubling with what does not concern one, Book 96: Holding Fast to the Qur'an and Sunnah