“كَ” (ka)means “like / as.” It is a preposition: it links this word to the next word or phrase.Corpus grammarP — prefixed preposition.
“الْ” (al)the Arabic equivalent of “the.” It makes the following noun specific.Corpus grammarDET — prefixed definite article.
“مُهْلِ” (muhli)means “Like the murky oil” in this verse. It is a noun. a naming word. Here it is masculine, genitive.Corpus grammarN — genitive noun.