الأربعون النووية
Forty Hadith of an-Nawawi
Hadith 9, 40 Hadith an-Nawawi

On the authority of Abu Hurayrah (ra):

I heard the Messenger of Allah (ﷺ) say, “What I have forbidden for you, avoid. What I have ordered you [to do], do as much of it as you can. For verily, it was only the excessive questioning and their disagreeing with their Prophets that destroyed [the nations] who were before you.” [Bukhari & Muslim]

عَنْ أَبِي هُرَيْرَةَ عَبْدِ الرَّحْمَنِ بْنِ صَخْرٍ رَضِيَ اللهُ عَنْهُ قَالَ: سَمِعْت رَسُولَ اللَّهِ صلى الله عليه و سلم يَقُولُ: "مَا نَهَيْتُكُمْ عَنْهُ فَاجْتَنِبُوهُ، وَمَا أَمَرْتُكُمْ بِهِ فَأْتُوا مِنْهُ مَا اسْتَطَعْتُمْ، فَإِنَّمَا أَهْلَكَ الَّذِينَ مِنْ قَبْلِكُمْ كَثْرَةُ مَسَائِلِهِمْ وَاخْتِلَافُهُمْ عَلَى أَنْبِيَائِهِمْ ".

[رَوَاهُ الْبُخَارِيُّ] ،[وَمُسْلِمٌ]

Reference : Hadith 9, 40 Hadith an-Nawawi