• رَفِيق
• مَرَافِق
• مُرْتَفَق
• مِّرْفَق

Appears 5 times in the Quran.

1. 4:69 وَمَن يُطِعِ ٱللَّهَ وَٱلرَّسُولَ فَأُو۟لَٰٓئِكَ مَعَ ٱلَّذِينَ أَنْعَمَ ٱللَّهُ عَلَيْهِم مِّنَ ٱلنَّبِيِّۦنَ وَٱلصِّدِّيقِينَ وَٱلشُّهَدَآءِ وَٱلصَّٰلِحِينَ وَحَسُنَ أُو۟لَٰٓئِكَ رَفِيقًا

   And whoever obeys Allah and the Messenger, these are with those upon whom Allah has bestowed favors from among the prophets and the truthful and the martyrs and the good, and a goodly company are they!
   

2. 5:6 يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوٓا۟ إِذَا قُمْتُمْ إِلَى ٱلصَّلَوٰةِ فَٱغْسِلُوا۟ وُجُوهَكُمْ وَأَيْدِيَكُمْ إِلَى ٱلْمَرَافِقِ وَٱمْسَحُوا۟ بِرُءُوسِكُمْ وَأَرْجُلَكُمْ إِلَى ٱلْكَعْبَيْنِ وَإِن كُنتُمْ جُنُبًا فَٱطَّهَّرُوا۟ وَإِن كُنتُم مَّرْضَىٰٓ أَوْ عَلَىٰ سَفَرٍ أَوْ جَآءَ أَحَدٌ مِّنكُم مِّنَ ٱلْغَآئِطِ أَوْ لَٰمَسْتُمُ ٱلنِّسَآءَ فَلَمْ تَجِدُوا۟ مَآءً فَتَيَمَّمُوا۟ صَعِيدًا طَيِّبًا فَٱمْسَحُوا۟ بِوُجُوهِكُمْ وَأَيْدِيكُم مِّنْهُ مَا يُرِيدُ ٱللَّهُ لِيَجْعَلَ عَلَيْكُم مِّنْ حَرَجٍ وَلَٰكِن يُرِيدُ لِيُطَهِّرَكُمْ وَلِيُتِمَّ نِعْمَتَهُۥ عَلَيْكُمْ لَعَلَّكُمْ تَشْكُرُونَ

   O you who believe! when you rise up to prayer, wash your faces and your hands as far as the elbows, and wipe your heads and your feet to the ankles; and if you are under an obligation to perform a total ablution, then wash (yourselves) and if you are sick or on a journey, or one of you come from the privy, or you have touched the women, and you cannot find water, betake yourselves to pure earth and wipe your faces and your hands therewith, Allah does not desire to put on you any difficulty, but He wishes to purify you and that He may complete His favor on you, so that you may be grateful.
   

3. 18:16 وَإِذِ ٱعْتَزَلْتُمُوهُمْ وَمَا يَعْبُدُونَ إِلَّا ٱللَّهَ فَأْوُۥٓا۟ إِلَى ٱلْكَهْفِ يَنشُرْ لَكُمْ رَبُّكُم مِّن رَّحْمَتِهِۦ وَيُهَيِّئْ لَكُم مِّنْ أَمْرِكُم مِّرْفَقًا

   And when you forsake them and what they worship save Allah, betake yourselves for refuge to the cave; your Lord will extend to you largely of His mercy and provide for you a profitable course in your affair.
   

4. 18:29 وَقُلِ ٱلْحَقُّ مِن رَّبِّكُمْ فَمَن شَآءَ فَلْيُؤْمِن وَمَن شَآءَ فَلْيَكْفُرْ إِنَّآ أَعْتَدْنَا لِلظَّٰلِمِينَ نَارًا أَحَاطَ بِهِمْ سُرَادِقُهَا وَإِن يَسْتَغِيثُوا۟ يُغَاثُوا۟ بِمَآءٍ كَٱلْمُهْلِ يَشْوِى ٱلْوُجُوهَ بِئْسَ ٱلشَّرَابُ وَسَآءَتْ مُرْتَفَقًا

   And say: The truth is from your Lord, so let him who please believe, and let him who please disbelieve; surely We have prepared for the iniquitous a fire, the curtains of which shall encompass them about; and if they cry for water, they shall be given water like molten brass which will scald their faces; evil the drink and ill the resting-place.
   

5. 18:31 أُو۟لَٰٓئِكَ لَهُمْ جَنَّٰتُ عَدْنٍ تَجْرِى مِن تَحْتِهِمُ ٱلْأَنْهَٰرُ يُحَلَّوْنَ فِيهَا مِنْ أَسَاوِرَ مِن ذَهَبٍ وَيَلْبَسُونَ ثِيَابًا خُضْرًا مِّن سُندُسٍ وَإِسْتَبْرَقٍ مُّتَّكِـِٔينَ فِيهَا عَلَى ٱلْأَرَآئِكِ نِعْمَ ٱلثَّوَابُ وَحَسُنَتْ مُرْتَفَقًا

   These it is for whom are gardens of perpetuity beneath which rivers flow, ornaments shall be given to them therein of bracelets of gold, and they shall wear green robes of fine silk and thick silk brocade interwoven with gold, reclining therein on raised couches; excellent the recompense and goodly the resting place.