Riyad as-Salihin, Book 9, Hadith 1211 (In-Book) ⓘ

Abu Ayyub (May Allah be pleased with him) reported: A man said to the Prophet: "Direct me to a deed which may admit me to Jannah." Upon this he (the Messenger of Allah) said, "Worship Allah and never associate anything with Him in worship, establish Salat, pay Zakat, and strengthen the ties of kinship."[Al-Bukhari and Muslim].

وعن أبي أيوب رضي الله عنه، أن رجلا قال للنبي صلى الله عليه وسلم ‏:‏ أخبرني بعمل يدخلني الجنة قال‏:‏ ‏ "‏تعبد الله لا تشرك به شيئًا، وتقيم الصلاة، وتؤتي الزكاة، وتصل الرحم‏" ‏ ‏(‏‏(‏متفق عليه‏)‏‏)‏ ‏.‏