“فَ” (fa)This word introduces the result of a condition, like “then.”Corpus grammarRSLT — prefixed rslt particle.
“أُمُّ” (ʾaummu)means “His abode” in this verse. It is a noun. a naming word. Here it is feminine — singular, nominative.Corpus grammarN — feminine singular nominative noun.
“هُ” (hu,)an attached pronoun meaning “he” or “him.”Corpus grammarPRON — third person masculine singular attached pronoun.