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 went to their doom because they had put too many questions to their Prophets and then disagreed with their teachings.  

أَنَّهُ سَمِعَ رَسُولَ اللَّهِ ﷺ يَقُولُ: «مَا نَهَيْتُكُمْ عَنْهُ فَاجْتَنِبُوهُ وَمَا أَمَرْتُكُمْ بِهِ فَافْعَلُوا مِنْهُ مَا اسْتَطَعْتُمْ، فَإِنَّمَا أَهْلَكَ الَّذِينَ مِنْ قَبْلِكُمْ كَثْرَةُ مَسَائِلِهِمْ وَاخْتِلاَفُهُمْ عَلَى أَنْبِيَائِهِمْ۔»  

Messenger of Allah ﷺ addressed us and said: O people, Allah has made Hajj obligatory for you; so perform Hajj. Thereupon a person said: Messenger of Allah, (is it to be performed) every year? He (the Holy Prophet) kept quiet, and he repeated (these words) thrice, whereupon Messenger of Allah ﷺ said: If I were to say" Yes," it would become obligatory (for you to perform it every year) and you would not be able to do it. Then he said: Leave me with what I have left to you, for those who were before you were desroyed because of excessive questioning, and their opposition to their apostles. So when I command you to do anything, do it as much as it lies in your power and when I forbid you to do anything, then abandon it.  

خَطَبَنَا رَسُولُ اللَّهِ ﷺ فَقَالَ: «أَيُّهَا النَّاسُ، قَدْ فَرَضَ اللَّهُ عَلَيْكُمُ الْحَجَّ فَحُجُّوا۔» فَقَالَ رَجُلٌ: أَكُلَّ عَامٍ يَا رَسُولَ اللَّهِ؟ فَسَكَتَ حَتَّى قَالَهَا ثَلاَثًا فَقَالَ رَسُولُ اللَّهِ ﷺ: «لَوْ قُلْتُ نَعَمْ لَوَجَبَتْ وَلَمَا اسْتَطَعْتُمْ۔» ثُمَّ قَالَ: «ذَرُونِي مَا تَرَكْتُكُمْ، فَإِنَّمَا هَلَكَ مَنْ كَانَ قَبْلَكُمْ بِكَثْرَةِ سُؤَالِهِمْ وَاخْتِلاَفِهِمْ عَلَى أَنْبِيَائِهِمْ۔ فَإِذَا أَمَرْتُكُمْ بِشَىْءٍ فَأْتُوا مِنْهُ مَا اسْتَطَعْتُمْ، وَإِذَا نَهَيْتُكُمْ عَنْ شَىْءٍ فَدَعُوهُ۔»