U+FD66 "ﵦ" Arabic Ligature Sad with Meem with Meem Final Form Unicode Character

U+FD66 "ﵦ" Arabic Ligature Sad with Meem with Meem Final Form is a typographic ligature used in Arabic script, specifically representing the sequential combination of the letters Sad (ص), Meem (م), and Meem (م) in their final form, meaning the ligature appears at the end of a word or after a preceding connecting character. This character is encoded in the Unicode standard under the Arabic Presentation Forms-A block, which contains various contextual and stylistic ligatures for traditional or calligraphic Arabic text, such as those found in the Quran or classical manuscripts. Its primary function is to enable accurate digital representation of these specialized ligatures, ensuring proper rendering in documents that require precise adherence to historical or aesthetic Arabic typographic conventions. Modern digital fonts and text processing systems may support this character to maintain textual integrity in religious, scholarly, or decorative contexts.