Sahih al-Bukhari 1153

Arabic

حَدَّثَنَا عَلِيُّ بْنُ عَبْدِ اللَّهِ، حَدَّثَنَا سُفْيَانُ، عَنْ عَمْرٍو، عَنْ أَبِي الْعَبَّاسِ، قَالَ سَمِعْتُ عَبْدَ اللَّهِ بْنَ عَمْرٍو ـ رضى الله عنهما ـ قَالَ لِي النَّبِيُّ صلى الله عليه وسلم ‏"‏ أَلَمْ أُخْبَرْ أَنَّكَ تَقُومُ اللَّيْلَ وَتَصُومُ النَّهَارَ ‏"‏ قُلْتُ إِنِّي أَفْعَلُ ذَلِكَ‏.‏ قَالَ ‏"‏ فَإِنَّكَ إِذَا فَعَلْتَ ذَلِكَ هَجَمَتْ عَيْنُكَ وَنَفِهَتْ نَفْسُكَ، وَإِنَّ لِنَفْسِكَ حَقٌّ، وَلأَهْلِكَ حَقٌّ، فَصُمْ وَأَفْطِرْ، وَقُمْ وَنَمْ ‏"‏‏.‏

English translation

Narrated 'Abdullah bin 'Amr:Once Allah's Messenger (ﷺ) said to me, "I have been informed that you offer Salat (prayer) all the night and observe Saum (fast) during the day." I said, "(Yes) I do so." He said, "If you do so, your eye sight will become weak and you will become weak. No doubt, your body has right on you, and your family has right on you, so observe Saum (for some days) and do not observe it (for some days), offer Salat (for sometime) and then sleep

Reference: Sahih al-Bukhari 1153, Book of Prayer at Night (Tahajjud). English translation by Dr. Muhammad Muhsin Khan.