There are two Leen Letters.

• If there is Fatha (ـَـ) before و sakin or ى sakin, it is called soft letter or Leen Letters. For Example: يَوْ، تَوْ and تي، ثي etc.
• Leen Letters should be pronounced softly without stretching.
• The difference between Maddah Letters and Leen Letters, must be identified carefully ,considering in sound.
• If the Leen letter appear in the end of word, it could be prolonged up to 3 /4 Alif, while, stopping on the last letter.