Yes, loyalty is vital. Jehovah told Adam: “A man will leave his father and his mother and he must stick to his wife. ” What does that mean?
فَلَا يَنْبَغِي أَنْ يُعْطِيَ ٱلْأَوْلَوِيَّةَ لِأَصْدِقَائِهِ وَأَقَارِبِهِ وَيُهْمِلَ عَائِلَتَهُ ٱلْجَدِيدَةَ .‏