The Quran

وَاعلَموا أَنَّ فيكُم رَسولَ اللَّهِ ۚ لَو يُطيعُكُم في كَثيرٍ مِنَ الأَمرِ لَعَنِتُّم وَلٰكِنَّ اللَّهَ حَبَّبَ إِلَيكُمُ الإيمانَ وَزَيَّنَهُ في قُلوبِكُم وَكَرَّهَ إِلَيكُمُ الكُفرَ وَالفُسوقَ وَالعِصيانَ ۚ أُولٰئِكَ هُمُ الرّاشِدونَ

Muhammad Asad

And know that God's Apostle is among you:¹ were he to comply with your inclinations in each and every case,² you would be bound to come to harm [as a community]. But as it is, God has caused [your] faith to be dear to you, and has given it beauty in your hearts, and has made hateful to you all denial of the truth, and all iniquity, and all rebellion [against what is good]. Such indeed are they who follow the right course

Sc., "and he ought to be an example for you as regards your behaviour towards one another". i.e., he would not accept rashly a hearsay tale affecting the honour of third persons, but would either refuse to listen to it altogether or, should a clarification become necessary in the interests of the community, would insist on ascertaining the truth objectively.
Lit., "in many a case (amr)": the implication being that, more often than not, man is prone to give credence to malicious rumours devoid of any real evidence.