فِي لَيْلَةِ القَدْرِ

فِي لَيْلَةِ القَدْرِ is a phrase (شِبْهُ الجُمْلَةِ) consisting of a preposition followed by a possessive nominal compound

PhraseParticle/Noun/NounNounNounParticle
شِبْهُ الجُمْلَةِ جَارٌ وَمَجْرُوْرٌ وَهُوَ مُضَافٌ وَ مُضَافٌ إِلَيْهِمُضَافٌ إِلَيْهِاسْمٌ مَجْرُوْرٌ وَهُوَ مَضَافٌحَرْفُ جَرٍّ
PhraseCompoundPossessive NounGenitive noun/Noun possessedParticle of pulling down
  
in the night of honorفِي لَيْلَةِ القَدْرِ=القَدْرِ+لَيْلَةِ+فِي
 in the night of powerpowerthe night ofin
Surah/Below is the only verse in the holy Quran containing the compoundفِيْ لَيْلَةِ القَدْرِ
Verse
97-1Truly, We have sent it down in the night of Qadrإِنَّآ أَنْزَاْنَاهُ فِي لَيْلَةِ الْقَدْرِ

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فِي لَيْلَةِ الْقَدْرِ occurrence

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