He who innovates things in our affairs for which there is no valid (reason) (commits sin) and these are to be rejected.
Sahih Muslim Book 30, Hadith 23
← Previous Hadith This hadith has been narrated on the authority of 'Abd al-Rahman b. Abu Bakra through another chain of transmitters.

Sahih Muslim Book 30, Hadith 22 Next Hadith → I asked Qasim b. Muhammad about a person who had three dwelling houses and he willed away the third part of every one of these houses; he (Qasim b. Muhammad) said: All of them could be combined in one house; and then said: 'A'isha informed me that Allah's Messenger (ﷺ) said: He who did any act for which there is no sanction from our behalf, that is to be rejected.

Sahih Muslim Book 30, Hadith 24