The Messenger of Allah ﷺ said, "Whoever dies not associating anything with Allah will enter Paradise."Abdullah said, "I found this hadith in my father's book in his own handwriting."
حدثنا أبو نعيم حدثنا زكريا عن عطية
قال رسول الله ﷺ من مات لا يشرك بالله شيئا دخل الجنة قال عبد الله وجدت هذا الحديث في كتاب أبي بخط يده
Its isnad is hasan, because of Atiya Awfi. Abu Naeem is Fadl bin Dukayn, and Zakariya is Ibn Abu Zaida. This has already come at 4038, and it is found in Muslim from Jabir, 1/94, no. 93, with the same wording. Haythami said, 1/17, "Ahmad and Bazzar related it, and its narrators are the narrators of the Sahih," meaning the narrators of Bazzar's version. As for the isnad here, there is discussion about it, and Abdullah bin Ahmad transmits it by wijada.