Speak good or be silent

Arabic

مَنْ كَانَ يُؤْمِنُ بِاللَّهِ وَالْيَوْمِ الْآخِرِ فَلْيَقُلْ خَيْرًا أَوْ لِيَصْمُتْ، وَمَنْ كَانَ يُؤْمِنُ بِاللَّهِ وَالْيَوْمِ الْآخِرِ فَلْيُكْرِمْ جَارَهُ، وَمَنْ كَانَ يُؤْمِنُ بِاللَّهِ وَالْيَوْمِ الْآخِرِ فَلْيُكْرِمْ ضَيْفَهُ.

Translation

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 be generous to his neighbour. Whoever believes in Allah and the Last Day, let him honour his guest.

Narrator

Abū Hurayrah

Source

Bukhārī 6018 · Muslim 47

Commentary

Three domains in a single sentence — speech, neighbours, guests. Each begins with 'whoever believes in Allah and the Last Day' as a test: if either part of that belief is shaky, the corresponding conduct will slip.