• ضَيْف
• ضَيْفهِۦ
• ضَيْفى
• ضَيْفىٓ
• يُضَيِّفُوهُمَا

Appears 6 times in the Quran.

1. 11:78 وَجَآءَهُۥ قَوْمُهُۥ يُهْرَعُونَ إِلَيْهِ وَمِن قَبْلُ كَانُوا۟ يَعْمَلُونَ ٱلسَّيِّـَٔاتِ قَالَ يَٰقَوْمِ هَٰٓؤُلَآءِ بَنَاتِى هُنَّ أَطْهَرُ لَكُمْ فَٱتَّقُوا۟ ٱللَّهَ وَلَا تُخْزُونِ فِى ضَيْفِىٓ أَلَيْسَ مِنكُمْ رَجُلٌ رَّشِيدٌ

   And his people came to him, (as if) rushed on towards him, and already they did evil deeds. He said: O my people! these are my daughters-- they are purer for you, so guard against (the punishment of) Allah and do not disgrace me with regard to my guests; is there not among you one right-minded man?
   

2. 15:51 وَنَبِّئْهُمْ عَن ضَيْفِ إِبْرَٰهِيمَ

   And inform them of the guests of Ibrahim:
   

3. 15:68 قَالَ إِنَّ هَٰٓؤُلَآءِ ضَيْفِى فَلَا تَفْضَحُونِ

   He said: Surely these are my guests, therefore do not disgrace me,
   

4. 18:77 فَٱنطَلَقَا حَتَّىٰٓ إِذَآ أَتَيَآ أَهْلَ قَرْيَةٍ ٱسْتَطْعَمَآ أَهْلَهَا فَأَبَوْا۟ أَن يُضَيِّفُوهُمَا فَوَجَدَا فِيهَا جِدَارًا يُرِيدُ أَن يَنقَضَّ فَأَقَامَهُۥ قَالَ لَوْ شِئْتَ لَتَّخَذْتَ عَلَيْهِ أَجْرًا

   So they went on until when they came to the people of a town, they asked them for food, but they refused to entertain them as guests. Then they found in it a wall which was on the point of falling, so he put it into a right state. (Musa) said: If you had pleased, you might certainly have taken a recompense for it.
   

5. 51:24 هَلْ أَتَىٰكَ حَدِيثُ ضَيْفِ إِبْرَٰهِيمَ ٱلْمُكْرَمِينَ

   Has there come to you information about the honored guests of Ibrahim?
   

6. 54:37 وَلَقَدْ رَٰوَدُوهُ عَن ضَيْفِهِۦ فَطَمَسْنَآ أَعْيُنَهُمْ فَذُوقُوا۟ عَذَابِى وَنُذُرِ

   And certainly they endeavored to turn him from his guests, but We blinded their eyes; so taste My chastisement and My warning.