https://charbase.com/fdfd-unicode-arabic-ligature-bismillah-ar-rahman-ar-raheem https://charbase.com/fdfd-unicode-arabic-ligature-bismillah-... Also fun is ﷺ,

https://charbase.com/fdfd-unicode-arabic-ligature-bismillah-ar-rahman-ar-raheem https://charbase.com/fdfd-unicode-arabic-ligature-bismillah-... Also fun is ﷺ, (https://charbase.com/fdfa-unicode-arabic-ligature-sallallahou-alayhe-wasallam https://charbase.com/fdfa-unicode-arabic-ligature-sallallaho...) which has the longest unicode decomposition IIRC.