Al-Matalib al-'Aliyah 2910 — The traits of faith

It is narrated from Sayyiduna Anas bin Malik (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever departs from this world in the state that he was (firm) upon sincerity to Allah, worshipping Him alone without any partner, establishing the prayer and paying the zakah, departs from it in a state that Allah, the Mighty and Majestic, is pleased with him." And Sayyiduna Anas (may Allah be pleased with him) said (further): "This is the religion of Allah which all the Messengers brought, and which they conveyed from their Lord before the proliferation of talk (trials) and the divergence of desires." Thus Allah, the Mighty and Majestic, says: "But if they repent, establish the prayer and give the zakah, then let them go their way" [Surah al-Tawbah: 5]. Sayyiduna Anas (may Allah be pleased with him) said in explanation of it: "They abandoned the rivals (set up with Allah) and their worship, established the prayer and paid the zakah."
The chain of this hadith is hasan (good); Imam al-Harith bin Abi Usamah recorded it in his Musnad, Imam Ibn Majah also recorded it in abridged form in his Sunan (hadith: 70), and Imam al-Hakim graded it sahih in al-Mustadrak.