What did the Prophet Muhammad (saw) say in response to Abdullah bin Ubai's statement "Do not spend on those who are with Allah's Apostle" and "If we return to Medina"?
 Narrated Zaid bin Arqam:                     When `Abdullah bin Ubai said, "Do not spend on those who are with Allah's Apostle," and also said, "If we return to Medina," I informed the Prophet of his saying. The Ansar blamed me for that, and `Abdullah bin Ubai swore that he did not say. I returned to my house and slept. Allah's Apostle then called me and I went to him. He said, "Allah has confirmed your statement." The Verse: "They are the one who say: Spend nothing......(63.7) was revealed.