in the authentic collections:

“ʿAbd Allāh ibn ʿAmr said, ‘I shall fast every day, spend every night in prayer, and recite the Quran each day.’ The Prophet (peace and blessings be upon him) told him, ‘Do not do so, for if you do, your eyes will become sunken—that is, recede into their sockets—and your soul will flag—that is, grow weary. Rather, fast three days each month, for that amounts to fasting continually,’ meaning that a good deed is rewarded tenfold. He replied, ‘I can manage more than that.’ He kept asking for more until the Prophet said, ‘Fast one day and do not fast the next.’ He replied, ‘I can manage more than that.’ He said, ‘There is nothing better than that.’ Regarding recitation, he told him, ‘Recite the Quran once each month.’ He kept asking for more until he said, ‘Recite it in seven days.’ He also told him that the best night prayer was that of David, and said to him, ‘Your own self has a right over you, your family has a right over you, and your wife has a right over you. So give everyone their due.’”

The Prophet (peace and blessings be upon him) thus explained to him that persisting in this practice adversely affects the body and soul, and prevents a person from doing what brings greater reward: fulfilling his obligations towards himself, his family, and his wife.

The best jihad and righteous deeds are those that show the greatest obedience to the Lord and bring the greatest benefit to His servant. If an action harms a person and prevents him from doing what would benefit him more, it is not righteous. It is also established in the authentic collection:

“Some men spoke, one saying, ‘As for me, I shall fast without ever taking a day off.’ Another said, ‘As for me, I shall pray at night and never sleep.’ Another said, ‘As for me, I shall not eat meat.’ Another said, ‘As for me, I shall not marry women.’ The Prophet (peace and blessings be upon him) then said: