Itban bin Malik reported,

I sent word to the Messenger of Allah ﷺ saying that I would love for him to come to me so I could pray with him in my home and take that spot as a place of prayer. The Prophet ﷺ came along with whichever of his companions Allah willed. He entered and began to pray in my home while his companions spoke among themselves. They placed the bulk and weight of their criticism upon Malik bin Dukhshum. They wished that the Prophet ﷺ would invoke against him so that he would perish, and they wished that some harm would befall him.The Messenger of Allah ﷺ denied that of him and said, "Does he not bear witness that there is no god but 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 god but Allah and that I am the Messenger of Allah and then enters the Fire, or has it consume him."

Azami 76

Sahih

عن عتبان بن مالك قال

بعثت إلى رسول الله ﷺ أني أحب أن آتيه فصلي في منزلي فأتخذه مصلى، قال: فأتى النبي ﷺ ومن شاء الله من أصحابه فدخل وهو يصلي في منزلي وأصحابه يتحدثون بينهم ثم أسندوا عظم ذلك وكبره إلى مالك بن دخشم قالوا: وقروا أنه دعا عليه فهلك، وقروا أنه أصابه شر، فنفى رسول الله ﷺ عنه الصلاة، وقال: أليس يشهد أن لا إله إلا الله، وأني رسول الله؟ قالوا: إنه يقول ذلك وما هو في قلبه. قال: لا يشهد أحد أن لا إله إلا الله وأني رسول الله فيدخل النار أو تطعمه.

الأعظمي 76صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Faith
Chapter
Qualities of faith
Section
Who died upon monotheism will enter Paradise
Numbering
Jami al-Kamil 76 (2nd edition)
Azami 76