Is action in faith a condition of perfection or a condition of validity?

According to the Sunnis and the Community (Ahl al-Sunnah wal-Jama'ah), faith consists of both utterance and action: the utterance of the heart (belief and affirmation) and its action (sincerity, love, fear, and hope); the utterance of the tongue (pronouncing the two testimonies of faith); and the action of the limbs. Outward actions are intertwined with inward ones. Abandoning the genus of action expels one from the faith, as indicated by the Almighty’s saying: "And they say, 'We believe in Allah and in the Messenger, and we obey,' then a party of them turn away after that. And those are not believers." (Quran 24:47). Ibn Taymiyyah also stated that whoever abandons the obligatory duties while claiming faith, that is hypocrisy. However, abandoning individual actions or specific deeds diminishes faith but does not remove it entirely, as in the Almighty’s saying: "And if two factions among the believers fight, then make settlement between them." (Quran 49:9). Faith, therefore, has varying branches, some of which, like the testimony of monotheism, cause faith to cease upon their absence, while others, like removing harm, do not cause faith to cease upon their abandonment.