An-Nawawi Hadith - 9

مَا نَهَيْتُكُمْ عَنْهُ فَاجْتَنِبُوهُ، وَمَا أَمَرْتُكُمْ بِهِ فَأْتُوا مِنْهُ مَا اسْتَطَعْتُمْ، فَإِنَّمَا أَهْلَكَ الَّذِينَ مِنْ قَبْلِكُمْ كَثْرَةُ مَسَائِلِهِمْ وَاخْتِلاَفُهُمْ عَلَى أَنْبِيَائِهِمْ رَوَاهُ البُخَارِيُّ وَمُسْلِمٌ

Abu Hurairah 'Abd al-Rahman bin Sakhr, radiyallahu 'anhu, reported: I heard the Messenger of Allah, sallallahu ‘alayhi wasallam, say: "Avoid that which I forbid you to do and do that which I command you to do to the best of your capacity. Verily the people before you were destroyed only because of their excessive questioning and their disagreement with their Prophets." [Al-Bukhari and Muslim]