Yusuf Ali
Nay more, it is for Us to explain it (and make it clear):

Sahih International
Then upon Us is its clarification [to you].

Shakir
Again on Us (devolves) the explaining of it.

Pickthall
Then lo! upon Us (resteth) the explanation thereof.

محمد جالندھری
پھر اس (کے معانی) کا بیان بھی ہمارے ذمے ہے