Sunan an-Nasa'i, Hadith 5092 ⓘ
It was narrated from Sa'eed bin Al-Musayyab that Mu'awiyah said: "The Messenger of Allah [SAW] forbade giving a false impression."
أَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ الأَعْلَى، قَالَ حَدَّثَنَا خَالِدٌ، عَنْ هِشَامٍ، قَالَ حَدَّثَنَا قَتَادَةُ، عَنْ سَعِيدِ بْنِ الْمُسَيَّبِ، أَنَّ مُعَاوِيَةَ، قَالَ إِنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم نَهَى عَنِ الزُّورِ .
also referenced under: Book 48, Hadith 53 (In-Book) & Volume 6, Book 48, Hadith 5095 (DarusSalam)