U+0899 "࢙" Arabic Small Low Word Ishmaam Unicode Character

U+0899 "࢙" Arabic Small Low Word Ishmaam is a diacritical mark used in specialized Quranic and classical Arabic orthography to indicate a phonetic phenomenon known as ishmaam, where a slight, inaudible rounding of the lips occurs during the pronunciation of a vowelless consonant, often to hint at a preserved or residual vowel sound. This mark appears as a small, low-placed symbol beneath an Arabic letter, distinct from the more common shadda or sukun, and serves to guide proper recitation in contexts where a word's historical or morphological vowel is suppressed rather than fully elided. In modern standard text, it is rarely used, making it a niche addition to the Unicode standard for preserving ancient textual accuracy.