It was narrated that Qais said: Abu Bakr stood up and praised and glorified Allah, then he said:O people, you recite this verse: `O you who believe! Take care of your ownselves...` (al-Ma’idah 5:105] until he reached the end of the verse. But if the people see an evildoer and do not stop him, soon Allah will send His punishment upon them all. But I heard the Messenger of Allah (ﷺ) say: “If the people...” And on another occasion he said: We heard the Messenger of Allah...
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا حَمَّادُ بْنُ أُسَامَةَ، قَالَ أَخْبَرَنَا إِسْمَاعِيلُ، عَنْ قَيْسٍ، قَالَ قَامَ أَبُو بَكْرٍ فَحَمِدَ اللَّهَ وَأَثْنَى عَلَيْهِ ثُمَّ قَالَ يَا أَيُّهَا النَّاسُ إِنَّكُمْ تَقْرَءُونَ هَذِهِ الْآيَةَ {يَا أَيُّهَا الَّذِينَ آمَنُوا عَلَيْكُمْ أَنْفُسَكُمْ} حَتَّى أَتَى عَلَى آخِرِ الْآيَةِ أَلَا وَإِنَّ النَّاسَ إِذَا رَأَوْا الظَّالِمَ لَمْ يَأْخُذُوا عَلَى يَدَيْهِ أَوْشَكَ اللَّهُ أَنْ يَعُمَّهُمْ بِعِقَابِهِ أَلَا وَإِنِّي سَمِعْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَقُولُ إِنَّ النَّاسَ وَقَالَ مَرَّةً أُخْرَى وَإِنَّا سَمِعْنَا رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ.
sunnah.com