To be furious while preaching or teaching if one sees what one hates

Narrated Abu Mas'ud Al-Ansari:

Once a man said to Allah's Apostle "O Allah's Apostle! I may not attend the (compulsory congregational) prayer because so and so (the Imam) prolongs the prayer when he leads us for it. The narrator added: "I never saw the Prophet more furious in giving advice than he was on that day. The Prophet ﷺ said, "O people! Some of you make others dislike good deeds (the prayers). So whoever leads the people in prayer should shorten it because among them there are the sick the weak and the needy (having some jobs to do)."

حَدَّثَنَا مُحَمَّدُ بْنُ كَثِيرٍ، قَالَ أَخْبَرَنَا سُفْيَانُ، عَنِ ابْنِ أَبِي خَالِدٍ، عَنْ قَيْسِ بْنِ أَبِي حَازِمٍ، عَنْ أَبِي مَسْعُودٍ الأَنْصَارِيِّ، قَالَ قَالَ رَجُلٌ يَا رَسُولَ اللَّهِ، لاَ أَكَادُ أُدْرِكُ الصَّلاَةَ مِمَّا يُطَوِّلُ بِنَا فُلاَنٌ، فَمَا رَأَيْتُ النَّبِيَّ ﷺ فِي مَوْعِظَةٍ أَشَدَّ غَضَبًا مِنْ يَوْمِئِذٍ فَقَالَ " أَيُّهَا النَّاسُ، إِنَّكُمْ مُنَفِّرُونَ، فَمَنْ صَلَّى بِالنَّاسِ فَلْيُخَفِّفْ، فَإِنَّ فِيهِمُ الْمَرِيضَ وَالضَّعِيفَ وَذَا الْحَاجَةِ ".

Narrated Zaid bin Khalid Al-Juhani:

A man asked the Prophet about the picking up of a "Luqata" (fallen lost thing). The Prophet replied, "Recognize and remember its tying material and its container, and make public announcement (about it) for one year, then utilize it but give it to its owner if he comes." Then the person asked about the lost camel. On that, the Prophet got angry and his cheeks or his Face became red and he said, "You have no concern with it as it has its water container, and its feet and it will reach water, and eat (the leaves) of trees till its owner finds it." The man then asked about the lost sheep. The Prophet replied, "It is either for you, for your brother (another person) or for the wolf."

حَدَّثَنَا عَبْدُ اللَّهِ بْنُ مُحَمَّدٍ، قَالَ حَدَّثَنَا أَبُو عَامِرٍ، قَالَ حَدَّثَنَا سُلَيْمَانُ بْنُ بِلاَلٍ الْمَدِينِيُّ، عَنْ رَبِيعَةَ بْنِ أَبِي عَبْدِ الرَّحْمَنِ، عَنْ يَزِيدَ، مَوْلَى الْمُنْبَعِثِ عَنْ زَيْدِ بْنِ خَالِدٍ الْجُهَنِيِّ، أَنَّ النَّبِيَّ ﷺ سَأَلَهُ رَجُلٌ عَنِ اللُّقَطَةِ فَقَالَ " اعْرِفْ وِكَاءَهَا ـ أَوْ قَالَ وِعَاءَهَا ـ وَعِفَاصَهَا، ثُمَّ عَرِّفْهَا سَنَةً، ثُمَّ اسْتَمْتِعْ بِهَا، فَإِنْ جَاءَ رَبُّهَا فَأَدِّهَا إِلَيْهِ ". قَالَ فَضَالَّةُ الإِبِلِ فَغَضِبَ حَتَّى احْمَرَّتْ وَجْنَتَاهُ ـ أَوْ قَالَ احْمَرَّ وَجْهُهُ ـ فَقَالَ " وَمَا لَكَ وَلَهَا مَعَهَا سِقَاؤُهَا وَحِذَاؤُهَا، تَرِدُ الْمَاءَ، وَتَرْعَى الشَّجَرَ، فَذَرْهَا حَتَّى يَلْقَاهَا رَبُّهَا ". قَالَ فَضَالَّةُ الْغَنَمِ قَالَ " لَكَ أَوْ لأَخِيكَ أَوْ لِلذِّئْبِ ".