Sahih Muslim 33a

Shayban ibn Farrukh narrated to us; Sulayman—meaning Ibn al-Mughirah—narrated to us; Thabit narrated to us, from Anas ibn Malik, who said: Mahmud ibn al-Rabi narrated to me, from Itban ibn Malik, who said: I came to Madinah and met Itban. I said, ‘A report has reached me from you.’ He said: Something happened to my eyesight, so I sent to the Messenger of Allah (peace and blessings be upon him): ‘I would like you to come to me and pray in my home so that I may take it as a place of prayer.’ The Prophet came, along with as many of his Companions as Allah willed, and entered while I was praying in my home. His Companions were talking among themselves, then they directed the chief part of their criticism at Malik ibn Dukhshum. They said they wished he would supplicate against him so that he would perish, and wished that some harm would befall him. The Messenger of Allah finished the prayer and said, ‘Does he not bear witness that there is no deity except Allah and that I am the Messenger of Allah?’ They said, ‘He says that, but it is not in his heart.’ He said, ‘No one bears witness that there is no deity except Allah and that I am the Messenger of Allah and then enters the Fire—or is consumed by it.’ Anas said: I was impressed by this hadith, so I told my son, ‘Write it down,’ and he did.