Az-Zukhruf 43:86

Wala yamliku allatheenayadAAoona min doonihi ashshafaAAata illaman shahida bilhaqqi wahum yaAAlamoon

And those they invoke besides Him do not possess [power of] intercession; but only those who testify to the truth [can benefit], and they know.

And those whom they invoke besides Him have no power to intercede; but those who bear witness to the truth, while they have knowledge (may intercede for the believers with Allah’s permission).