Simon thereupon went to his father and said:
“You are rich, batiushika [little father], but you have given nothing to me. Give me one-third of what you possess as my share, and I will transfer it to my estate.”
The old man replied: “You did not help to bring prosperity to our household. For what reason, then, should you now demand the third part of everything? It would be unjust to Ivan and his sister.”
“Yes,” said Simon; “but he is a fool, and she was born dumb. What need have they of anything?”
-- Ivan the Fool, tr. by Count Norraikow
Is of anything the complement for need or does it have adverbial role as prepositional phrase?