طَاعَةٌ وَقَوْلٌ مَّعْرُوفٌ ۚ فَإِذَا عَزَمَ ٱلْأَمْرُ فَلَوْ صَدَقُوا۟ ٱللَّهَ لَكَانَ خَيْرًا لَّهُمْ
Taa'atunw wa qawlum ma'roof; fa izaa 'azamal amru falaw sadaqul laaha lakaana khairal lahum
would be obedience and fitting words; it would also be better for them to be true to God when the decision to fight has been made.
Obedience and a fitting word. And when the matter is resolved, it would be better for them to be true to God.