غَيْرُ مَمْنُوْنٍ

غَيْرُ مَمْنُوْنٍ is a phrase (شِبْهُ الجُمْلَةِ), a possessive nominal compound

PhraseNoun / NounNoun Noun
شِبْهُ الجُمْلَةِمُضَافٌ وَ مُضَافٌ إِلَيْهِمُضَافٌ إِلَيْهِمُضَافٌ
PhraseCompoundPossessive nounNoun possessed/owned
without diminishingغَيْرُ مَمْنُوْنٍ=مَمْنُوْنٍ+غَيْرُ
without reductionend, diminishing, reductionwithout
Surah/Below are the 3 verses in the holy Quran containing the compoundغَيْرُ مَمْنُوْنٍ
Verse
41-8 
except those who believe and do good deedsإِلَّا الَّذِيْنَ ءَامَنُوا وَعَمِلُوا الصَّالِحَاتِ
84-25for them is a reward that will never endلَهُمْ أَجْرٌ غَيْرُ مَمْنُوْنٍ
Except those who believe and do righteous deedsإِلَّا الَّذِيْنَ ءَامَنُوْا وَعَمِلُوْا الصَّالِحَاتِ
95-6for them is a reward without endفَلَهُمْ أَجْرٌ غَيْرُ مَمْنُوْنٍ