وَالتِّيْنِ

وَالتِّيْنِ is a phrase (شِبْهُ الجُمْلَةِ) consisting of a particle of pulling down (a preposition) and a genitive noun

PhraseParticle / NounNoun Particle
شِبْهُ الجُمْلَةِجَارٌ وَمَجْرُوْرٌاسْمٌ مَجْرُوْرٌحَرْفُ جَرٍّ
PhraseCompoundGenitive NounParticle of pulling down/Preposition
  
by the figوَالتِّيْنِ=التِّيْنِ+وَ
 by the figthe figby
Surah/Below is the only verse in the holy Quran containing the compoundوَالتِّيْنِ
Verse
95-1By the fig and the oliveوَالتِّيْنِ وَالزَّيْتُوْنِ