What does it mean when a Muslim raises the index-fing­er?

Answer: Expressing the unity of Allah. In Arabic, the index or fore finger is called Musabbiha (مُسَبِّحة), mostly used with the definite article: al-Musabbiha (الْمُسَبِّحة). Some­times also this word is used: al-Sabbāha (السَّبّاحة). This finger, when a Muslim makes a sign with it (by raising it), symbol­ises the unity of[…]