مَنْ كَانَ يُؤْمِنُ بِاللَّهِ وَالْيَوْمِ الْآخِرِ، فَلْيُكْرِمْ ضَيْفَهُ، وَمَنْ كَانَ يُؤْمِنُ بِاللَّهِ وَالْيَوْمِ الْآخِرِ، فَلَا يُؤْذِ جَارَهُ، وَمَنْ كَانَ يُؤْمِنُ بِاللَّهِ وَالْيَوْمِ الْآخِرِ، فَلْيَقُلْ خَيْرًا أَوْ لِيَصْمُتْ
Translation: Whoever believes in Allah and the Last Day should honor their guest; whoever believes in Allah and the Last Day should not harm their neighbor; and whoever believes in Allah and the Last Day should speak good or remain silent.
Source: البخاري ومسلم
مَنْ كَانَ يُؤْمِنُ means “whoever believes”; يُؤْمِنُ is an imperfect (present-form) verb. فَلْيُكْرِمْ and فَلْيَقُلْ use the command particle to require honoring the guest and speaking well. In فَلَا يُؤْذِ, لَا expresses prohibition: “do not harm.”
The threefold reference to belief connects hospitality, neighbors’ rights, and control of speech to religious responsibility, rather than treating them as optional social niceties.