Abu Hurairah (May Allah be pleased with him) reported:
A bedouin came to the Prophet ﷺ and said: "O Messenger of Allah! Direct me to a deed by which I may be entitled to enter Jannah." The Prophet ﷺ said, "Worship Allah, and never associate anything with Him, establish Salat, pay the Zakat which has been enjoined upon you, and observe Saum of Ramadan." He (the bedouin) said: "By Him in Whose Hand my soul is, I will never add anything to these (obligations)." When he turned his back, the Prophet ﷺ said, "He who wants to see a man from the dwellers of Jannah, let him look at him (bedouin)."

[Al-Bukhari and Muslim].

وعن أبي هريرة رضي الله عنه، أن أعرابيًا أتي النبي ﷺ فقال: يا رسول الله دلني على عمل إذا عملته، دخلت الجنة. قال: "تعبد الله ولا تشرك به شيئًا، وتقيم الصلاة، وتؤتي الزكاة المفروضة، وتصوم رمضان" قال: والذي نفسي بيده، لا أزيد على هذا. فلما ولى قال النبي ﷺ : "من سره أن ينظر إلى رجل من أهل الجنة فلينظر إلى هذا" ((متفق عليه)) .