فَاعْلَمْ. Almighty Allah says: O, you who believe! remember Allah abundantly. O, Musa Son of Imran! O, Master of expression, listen to My different kind of words: Indeed, I am Allah the King who gives reward. There is no need of any interpreter between you and Me. Warn the one who takes Reba'(interest) and the one who is disinherited by his parents (Aaq al-Walidain). Warn him of wrath of Rahman (the beneficent) and flame of Hell. O, Son of Adam!
when you find that your heart has hardened and there is disease in your body and you don't find sustenance, then you should know that: Indeed, you have said something which has not benefited you. O, Son of Adam! your religion is not going to correct you until you straighten your tongue and your heart. And your heart is not going to be straightened unless you straighten your tongue. And your tongue is not going to be straightened unless you are humble towards your Lord.
When you see the faults of people and don't see the faults in yourself, then indeed, you have pleased Satan and angered you Lord. O, Son of Adam! If your tongue is (like) a lion and if you leave it alone, it will destroy you, your destruction is because of your tongue. الحديث الثالث والعشرون يَابْنَ آدَمَ! إِنَّ الشَّيْطَانَ لَكُمْ عَدُوٌّ مُبِيْنٌ فَاتَّخِذُوهُ عَدُوّاً فَعْمَلُوا لِلْيَوْم الَّذِي تُحْشَروُنَ فِيهِ إِلَى اللَّهِ تَعَالَى فَوْجاً فَوْجاً.