Al-Adab Al-Mufrad, Book 14, Hadith 291 (In-Book) ⓘ
Usama ibn Sharik said, "I was with the Prophet, may Allah bless him and grant him peace, when some bedouins came. There were many people on all sides. The people were silent and no one spoke except them. They said, 'Messenger of Allah! We experience difficulty in such-and-such and such-and-such' and it was in things which are not harmful to people. He said, 'Servants of Allah! Allah has removed difficulty except in a case where a man slanders someone unjustly - that is the one who is in difficulty and destroyed.' They said, 'Messenger of Allah, can we make use of medical treatment?' 'Yes, servants of Allah,' he replied, 'you can make use of medical treatment. Allah Almighty did not create an illness but that He made a cure for it - except for one disease.' They asked, 'And what is that, Messenger of Allah?' 'Old age,' he replied. They said, 'Messenger of Allah, what is the best thing that a man can be given?' 'Good character,' he replied.'"
حَدَّثَنَا أَبُو النُّعْمَانِ، قَالَ: حَدَّثَنَا أَبُو عَوَانَةَ، عَنْ زِيَادِ بْنِ عِلاَقَةَ، عَنْ أُسَامَةَ بْنِ شَرِيكٍ قَالَ: كُنْتُ عِنْدَ النَّبِيِّ صلى الله عليه وسلم وَجَاءَتِ الأَعْرَابُ، نَاسٌ كَثِيرٌ مِنْ هَاهُنَا وَهَاهُنَا، فَسَكَتَ النَّاسُ لاَ يَتَكَلَّمُونَ غَيْرَهُمْ، فَقَالُوا: يَا رَسُولَ اللهِ، أَعَلَيْنَا حَرَجٌ فِي كَذَا وَكَذَا؟ فِي أَشْيَاءَ مِنْ أُمُورِ النَّاسِ، لاَ بَأْسَ بِهَا، فَقَالَ: يَا عِبَادَ اللهِ، وَضَعَ اللَّهُ الْحَرَجَ، إِلاَّ امْرَءًا اقْتَرَضَ امْرَءًا ظُلْمًا فَذَاكَ الَّذِي حَرِجَ وَهَلَكَ، قَالُوا: يَا رَسُولَ اللهِ، أَنَتَدَاوَى؟ قَالَ: نَعَمْ يَا عِبَادَ اللهِ تَدَاوَوْا، فَإِنَّ اللَّهَ عَزَّ وَجَلَّ لَمْ يَضَعْ دَاءً إِلاَّ وَضَعَ لَهُ شِفَاءً، غَيْرَ دَاءٍ وَاحِدٍ، قَالُوا: وَمَا هِيَ يَا رَسُولَ اللهِ؟ قَالَ: الْهَرَمُ، قَالُوا: يَا رَسُولَ اللهِ، مَا خَيْرُ مَا أُعْطِيَ الإِنْسَانُ؟ قَالَ: خُلُقٌ حَسَنٌ.
also referenced under: Hadith 291 (Reference) & Book 14, Hadith 291 (English)