Sahih al-Bukhari — Hadith 6018
Narrated by Abu Hurairah
مَنْ كَانَ يُؤْمِنُ بِاللَّهِ وَالْيَوْمِ الآخِرِ فَلْيَقُلْ خَيْرًا أَوْ لِيَصْمُتْ وَمَنْ كَانَ يُؤْمِنُ بِاللَّهِ وَالْيَوْمِ الآخِرِ فَلْيُكْرِمْ جَارَهُ وَمَنْ كَانَ يُؤْمِنُ بِاللَّهِ وَالْيَوْمِ الآخِرِ فَلْيُكْرِمْ ضَيْفَهُ
Translation
The Prophet said: 'Whoever believes in Allah and the Last Day, let him speak good or remain silent. Whoever believes in Allah and the Last Day, let him honor his neighbor. Whoever believes in Allah and the Last Day, let him honor his guest.'
Commentary
This hadith links faith directly to social behavior. Belief in God and the Day of Judgment must manifest in three practical ways: disciplined speech, respect for neighbors, and hospitality. It illustrates that Islam views ethical conduct as inseparable from theological belief.