To make the Heart Tender (Ar-Riqaq)
Ṣaḥīḥ al-Bukhārī 6476
يَوْمٌ وَلَيْلَةٌ، وَمَنْ كَانَ يُؤْمِنُ بِاللَّهِ وَالْيَوْمِ الآخِرِ فَلْيُكْرِمْ ضَيْفَهُ، وَمَنْ كَانَ يُؤْمِنُ بِاللَّهِ وَالْيَوْمِ الآخِرِ فَلْيَقُلْ خَيْرًا، أَوْ لِيَسْكُتْ
yawmun walaylatun, waman kāna yuʾminu billāh wa-l-yawmi al-ākhiri falyukrim ḍayfah, waman kāna yuʾminu billāh wa-l-yawmi al-ākhiri falyaqul khayran, aw liyaskut
Transliteration generated from the Arabic vowel marks
The full narration
Narrated Abu Shuraih Al-Khuza`i:My ears heard and my heart grasped (the statement which) the Prophet (ﷺ) said, "The period for keeping one's guest is three days (and don't forget) his reward." It was asked, "What is his reward?" He said, "In the first night and the day he should be given a high class quality of meals; and whoever believes in Allah and the Last Day, should entertain his guest generously; and whoever believes in Allah and the Last Day should talk what is good (sense) or keep quiet
Source
Ṣaḥīḥ al-Bukhārī · 6476