Anas (May Allah be pleased with him) reported:
Three men came to the houses of the wives of the Prophet (ﷺ) to inquire about the worship of the Prophet (ﷺ). When they were informed, they considered their worship insignificant and said: "Where are we in comparison with the Prophet (ﷺ) while Allah has forgiven his past sins and future sins". One of them said: "As for me, I shall offer Salat all night long." Another said: "I shall observe Saum (fasting) continuously and shall not break it". Another said: "I shall abstain from women and shall never marry". The Prophet (ﷺ) came to them and said, "Are you the people who said such and such things? By Allah, I fear Allah more than you do, and I am most obedient and dutiful among you to Him, but still I observe fast and break it; perform Salat and sleep at night and take wives. So whoever turns away from my Sunnah does not belong to me".[Al-Bukhari and Muslim].
Arabic/English book reference: Book 1, Hadith 143