Verily, the lawful is clear, and the unlawful is clear

An-Nu'mān ibn Bashīr (may Allah be pleased with him) reported: I heard the Messenger of Allah (may Allah's peace and blessings be upon him) say, as An-Nu'mān dropped his two fingers to his ears:

"Verily, the lawful is clear, and the unlawful is clear, and between them are doubtful matters many people do not know. Whoever avoids doubtful matters clears his liability regarding his religion and his honor, and whoever falls into doubtful matters will fall into the unlawful, just like the shepherd who grazes his animals in the vicinity of a prohibited pasture and is thus likely to graze therein. Verily, every king has a protected area, and the protected area of Allah is His prohibitions. Verily, in the body, there is a piece of flesh; if it is sound, the entire body will be sound, and if it is corrupt, the entire body will be corrupt; verily, that is the heart."

«إِنَّ الْحَلَالَ بَيِّنٌ وَإِنَّ الْحَرَامَ بَيِّنٌ، وَبَيْنَهُمَا مُشْتَبِهَاتٌ لَا يَعْلَمُهُنَّ كَثِيرٌ مِنَ النَّاسِ، فَمَنِ اتَّقَى الشُّبُهَاتِ اسْتَبْرَأَ لِدِينِهِ وَعِرْضِهِ، وَمَنْ وَقَعَ فِي الشُّبُهَاتِ وَقَعَ فِي الْحَرَامِ، كَالرَّاعِي يَرْعَى حَوْلَ الْحِمَى يُوشِكُ أَنْ يَرْتَعَ فِيهِ، أَلَا وَإِنَّ لِكُلِّ مَلِكٍ حِمًى، أَلَا وَإِنَّ حِمَى اللهِ مَحَارِمُهُ، أَلَا وَإِنَّ فِي الْجَسَدِ مُضْغَةً، إِذَا صَلَحَتْ صَلَحَ الْجَسَدُ كُلُّهُ، وَإِذَا فَسَدَتْ فَسَدَ الْجَسَدُ كُلُّهُ، أَلَا وَهِيَ الْقَلْبُ».