Hi there I started to study Classical Arabic, and I have 2 questions. Question 1: I've seen this sentence: أَيْنَ مُحَمَّدٌ؟ مُحَمَّدٌ فِي الْغُرْفَةِ. Why does "muhammad" end with "oon"? I read that when it ends with "oon" it's the indefinite article, like "a" in english. بَيْتٌ - a house مَسْجِدٌ - a mosque So why does "muhammad" ends with "oon": مُحَمَّدٌ? "a muhammad"? Question 2: Let's say I accept this, it should be مُحَمَّدٌ. So why in the following sentence, it does not end in "oon"? وَأَيْنَ آمِنةُ؟ آمِنَةُ فِي الْمَطْبَخِ. Why آمِنةُ and not آمِنةٌ?