Narrated Aishaرضي الله عنها the prophet صلي الله عليه و سلم said; [ whoever performs a( good) deed which we have not ordered (anyone) to do ( or is not in accord with our religion of islamic monotheism), then that deed will be rejected and will not be accepted.]                    sahih boukhari

Narrated Aishaرضي الله عنها the prophetصلي الله عليه و سلم said; [ if somebody innovates something which is not present in our religion( of islamic monotheism), then that thing will be rejected].

sahih boukhari