Question: The alphabet of which the letter Sad is a part includes how many letters?
Sentence (from "Sad (surah)"): Sūrat Ṣād (Arabic: سورة ص‎ ‎ , "The Letter Sad") is the 38th sura of the Qur'an with 88 ayat and 1 sajdah (39:24).
Relevant evidence: No