I'm reading the Quran and in many places I can't find the reason behind fatha, kasra and damma.
وَقَدْ مَكَرُوا مَكْرَهُمْ وَعِندَ اللَّهِ مَكْرُهُمْ وَإِن كَانَ مَكْرُهُمْ لِتَزُولَ مِنْهُ الْجِبَالُ - 14:46
makrAhum vs. makrUhum and they both mean "their plan". So why with two diffetent vowels?
Where can I ask these types of questions related to Arabic language of the Quran?