Izhar: read it clearly
إِظْهَارBefore the six throat letters ء ه ع ح غ خ, the noon is pronounced clearly, with no extra nasal sound and no merging.
ٱلَّذِىٓ أَطْعَمَهُم مِّن جُوعٍۢ وَءَامَنَهُم مِّنْ خَوْفٍۭ ﴿٤﴾
فَمَن يَعْمَلْ مِثْقَالَ ذَرَّةٍ خَيْرًۭا يَرَهُۥ ﴿٧﴾