لِلْيُسْرَى

لِلْيُسْرَى is a phrase (شِبْهُ الجُمْلَةِ) a compound consisting of a particle and a genitive noun

PhraseParticle / NounNoun Particle
شِبْهُ الجُمْلَةِجَارٌ وَمَجْرُوْرٌاسْمٌ مَجْرُوْرٌحَرْفُ جَرٍّ
PhraseCompoundGenitive NounParticle of pulling down/preposition
  
to easeلِلْيُسْرَى=اليُسْرَى+لِ
towards easeeasetowards
Surah/Below are the 2 verses in the holy Quran containing the phraseلِلْيُسْرَى
Verse
87-8We will facilitate you towards easeوَنُيَسِّرُكَ لِلْيُسْرَى
92-7then We will facilitate him towards easeفَسَنُيَسِّرُهُ لِلْيُسْرَى