ۀ is a letter of the Pashto and Persian languages consisting of hāʾ with a hamza above.
Usage
In the Pashto alphabet, it is the fortieth letter, known as Kajira He, where it represents the vowel /ə/ and is transliterated ⟨ë⟩.[3]
In Persian, it is not considered a distinct letter of the alphabet but is used when marking ezafe on a word ending in ـه⟨…e⟩[e], thus yielding ـهٔ⟨…e-ye⟩[eje]. According to one source, this is not actually a hamza but rather a development of the letter یye as a diacritic.[4]
In both written Pashto and Persian, it only appears in the final position:
