وَعَنْ عَبْدِ اللَّهِ بْنِ سَلَامٍ رَضِيَ اللَّهُ عَنْهُ قَالَ: لَمَّا قَدِمَ النَّبِيُّ ﷺ الْمَدِينَةَ جِئْتُ، فَلَمَّا تَبَيَّنْتُ وَجْهَهُ، عَرَفْتُ أَنَّ وَجْهَهُ لَيْسَ بِوَجْهِ كَذَّابٍ، فَكَانَ أَوَّلَ مَا قَالَ: يَا أَيُّهَا النَّاسُ! أَفْشُوا السَّلَامَ، وَأَطْعِمُوا الطَّعَامَ، وَصِلُوا الْأَرْحَامَ، وَصَلُّوا بِاللَّيْلِ وَالنَّاسُ نِيَامٌ، تَدْخُلُوا الْجَنَّةَ بِسَلَامٍ
Translation: ʿAbd Allah ibn Salam said: When the Prophet ﷺ came to Medina, I went and looked closely at his face, recognizing that it was not the face of a liar. Among his first words were: People, spread greetings of peace, feed others, maintain family ties, and pray at night while people are sleeping; you will enter Paradise in peace.
ʿAbd Allah ibn Salam relates that when the Prophet ﷺ arrived in Medina, he went to see him. On observing his face, he was convinced it was not the face of a liar. He then relates the first words he heard the Prophet ﷺ address to people.
لَمَّا قَدِمَ means “when he arrived”; تَبَيَّنْتُ وَجْهَهُ “I looked closely at his face”; and لَيْسَ بِوَجْهِ كَذَّابٍ “it was not the face of a liar.” This describes the companion’s own observation, not a universal rule for deciding a stranger’s honesty solely from appearance.
Source: Tirmidhi, Ibn Majah, Darimi