“فَ” (fa)This word resumes the flow after a pause or change in thought.Corpus grammarREM — prefixed rem particle.
“مَالُِونَ” (māliuwna)means “Then will fill” in this verse. It is a noun form. a word describing a doer or an action in progress. Its opening “mu-” is part of this word pattern, not a separate added word.Corpus grammarN — masculine plural nominative active noun.