Innovation in Islam will be totally rejected by Allah, Mother of Faithful Aaishah R.A. narration

Hadeeth 5 (From Imam Nawwi 40 hadith collection Related by al-Bukhari and Muslim.)

On the authority of the mother of the faithful, Aaishah (may Allah be pleased with her), who said:

The Messenger of Allah (peace and blessings of Allah be upon him) said, “He who innovates something in this matter of ours [i.e., Islam] that is not of it will have it rejected [by Allah].”

In one version by Muslim it reads: “He who does an act which we have not commanded, will have it rejected [by Allah].”