كتاب الصيام
13  
The Book of Fasting
(35)
Chapter: Prohibition of Fasting for a lifetime for the one who will be harmed by that or who will neglect other duties, or does not break his fast on the two 'Ids or during the days of At-Tashriq; It is better to fast alternate days
(35)
بَاب النَّهْيِ عَنْ صَوْمِ الدَّهْرِ لِمَنْ تَضَرَّرَ بِهِ أَوْ فَوَّتَ بِهِ حَقًّا أَوْ لَمْ يُفْطِرْ الْعِيدَيْنِ وَالتَّشْرِيقَ وَبَيَانِ تَفْضِيلِ صَوْمِ يَوْمٍ وَإِفْطَارِ يَوْمٍ
Sahih Muslim 1159 i

This hadith is narrated on the authority of Habib b. Abu Thabit with the same chain of transmitters and he said:

" And you would become exhausted."
وَحَدَّثَنَاهُ أَبُو كُرَيْبٍ، حَدَّثَنَا ابْنُ بِشْرٍ، عَنْ مِسْعَرٍ، حَدَّثَنَا حَبِيبُ بْنُ أَبِي ثَابِتٍ، بِهَذَا الإِسْنَادِ وَقَالَ ‏ "‏ وَنَفِهَتِ النَّفْسُ ‏"‏ ‏.‏
Reference : Sahih Muslim 1159i
In-book reference : Book 13, Hadith 243
USC-MSA web (English) reference : Book 6, Hadith 2593
  (deprecated numbering scheme)