The Messenger of Allah ﷺ as saying: "If one who passes in front of a man who is praying knew the responsibility he incurs, he would prefer to stand still for forty. . . rather than pass in front of him. Abu al-Nadr said: I do not know whether he said forty days, or months, or years." Abu Dawud: Sufyan al-Thawri said: If a man passes proudly in front of me while I am praying, I shall stop him, and if a weak man passes, I shall not stop him. (Using translation from Abū Dāʾūd 701)   

سَمِعَ مِنْ رَسُولِ اللهِ ﷺ فِي الْمَارِّ بَيْنَ يَدَيِ الْمُصَلِّي مَاذَا عَلَيْهِ؟ قَالَ أَبُو الْجُهَيْمِ قَالَ رَسُولُ اللهِ ﷺ لَوْ يَعْلَمُ الْمَارُّ بَيْنَ يَدَيِ الْمُصَلِّي مَاذَا عَلَيْهِ لَكَانَ أَنْ يَقِفَ أَرْبَعِينَ خَيْرًا لَهُ مِنْ أَنْ يَمُرَّ بَيْنَ يَدَيْهِ قَالَ أَبُو النَّضْرِ لَا أَدْرِي أَقَالَ أَرْبَعِينَ يَوْمًا أَوْ أَرْبَعِينَ شَهْرًا أَوْ أَرْبَعِينَ سَنَةً  

The Prophet ﷺ came from the direction of Bir Jamal. A man met him and greeted him. But he did not return back the greeting till he went to a (mud) wall and wiped his face and hands with its dust (performed Tayammum) and then returned back the greeting. (Using translation from Bukhārī 337)  

أَقْبَلْتُ أَنَا وَعَبْدُ اللهِ بْنُ يَسَارٍ مَوْلَى مَيْمُونَةَ زَوْجِ النَّبِيِّ ﷺ دَخَلْنَا عَلَى أَبِي جُهَيْمِ بْنِ الْحَارِثِ بْنِ الصِّمَّةِ الْأَنْصَارِيِّ قَالَ أَبُو جُهَيْمٍ أَقْبَلَ رَسُولُ اللهِ ﷺ مِنْ نَحْوِ بِئْرِ جَمَلٍ فَلَقِيَهُ رَجُلٌ فَسَلَّمَ عَلَيْهِ فَلَمْ يَرُدَّ عَلَيْهِ رَسُولُ اللهِ ﷺ حَتَّى أَقْبَلَ عَلَى الْجِدَارِ فَمَسَحَ بِوَجْهِهِ وَيَدَيْهِ ثُمَّ رَدَّ عَلَيْهِ رَسُولُ اللهِ ﷺ  

[Machine] Two men disagreed about a verse from the Quran. One said, "I received this from the Messenger of Allah ﷺ," and the other said, "I received it from the Messenger of Allah ﷺ." So they asked the Prophet ﷺ, who said, "The Quran is recited in seven different ways, so do not dispute in the Quran, for dispute in the Quran is disbelief."  

أَنَّ رَجُلَيْنِ اخْتَلَفَا فِي آيَةٍ مِنَ الْقُرْآنِ فَقَالَ هَذَا تَلَقَّيْتُهَا مِنْ رَسُولِ اللهِ ﷺ وَقَالَ الْآخَرُ تَلَقَّيْتُهَا مِنْ رَسُولِ اللهِ ﷺ فَسَأَلَا النَّبِيَّ ﷺ فَقَالَ الْقُرْآنُ يُقْرَأُ عَلَى سَبْعَةِ أَحْرُفٍ فَلَا تُمَارُوا فِي الْقُرْآنِ فَإِنَّ مِرَاءً فِي الْقُرْآنِ كُفْرٌ