The Book of Fasting
13/35. 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
Sahih Muslim
وَحَدَّثَنَاهُ أَبُو كُرَيْبٍ، حَدَّثَنَا ابْنُ بِشْرٍ، عَنْ مِسْعَرٍ، حَدَّثَنَا حَبِيبُ بْنُ أَبِي ثَابِتٍ، بِهَذَا الإِسْنَادِ وَقَالَ " وَنَفِهَتِ النَّفْسُ " .
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."
Reference : Sahih Muslim 1159iIn-book reference : Book 13, Hadith 243USC-MSA web (English) reference : Book 6, Hadith 2593