Mishkat al-Masabih 145
Anas said:
Three people came to the Prophet’s wives and asked how the Prophet conducted his worship. When they were told about it they seemed to consider it little and said, “What a difference there is between us and the Prophet whose former and latter sins have been forgiven him by God!” One of them said, “As for me, I will always pray during the night.” Another said, “I will fast during the daytime and not break my fast.” The other said, “I will have nothing to do with women and will never marry.” Then the Prophet came to them and said, “Are you the people who said such and such? By God, I am the one of you who fears and reverences God most, yet I fast and I break my fast; I pray and I sleep; and I marry women. He who is displeased with my sunna has nothing to do with me.” 

(Bukhari and Muslim.)
عَنْ أَنَسِ بْنِ مَالِكٍ رَضِيَ اللَّهُ عَنْهُ يَقُولُ جَاءَ ثَلَاثَة رَهْط إِلَى بيُوت أَزْوَاجِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَسْأَلُونَ عَنْ عِبَادَةِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَلَمَّا أخبروا كَأَنَّهُمْ تقالوها فَقَالُوا وَأَيْنَ نَحْنُ مِنَ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَدْ غُفِرَ لَهُ مَا تَقَدَّمَ مِنْ ذَنْبِهِ وَمَا تَأَخَّرَ قَالَ أحدهم أما أَنا فَإِنِّي أُصَلِّي اللَّيْل أبدا وَقَالَ آخر أَنا أَصوم الدَّهْر وَلَا أفطر وَقَالَ آخر أَنَا أَعْتَزِلُ النِّسَاءَ فَلَا أَتَزَوَّجُ أَبَدًا فَجَاءَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِلَيْهِمْ فَقَالَ: «أَنْتُمُ الَّذِينَ قُلْتُمْ كَذَا وَكَذَا أَمَا وَاللَّهِ إِنِّي لَأَخْشَاكُمْ لِلَّهِ وَأَتْقَاكُمْ لَهُ لَكِنِّي أَصُومُ وَأُفْطِرُ وَأُصَلِّي وَأَرْقُدُ وَأَتَزَوَّجُ النِّسَاءَ فَمَنْ رَغِبَ عَنْ سُنَّتِي فَلَيْسَ مني»