Saying from the Seal of the Prophets (SAAS)

على المرء المسلم السمع والطاعة . فيما أحب وكره . إلا أن يؤمر بمعصية . فإن أمر بمعصية ، فلا سمع ولا طاعة

Prophet Muhammad (SAAS) said, "It is an obligation upon the Muslim to hear and obey concerning what he likes and what he dislikes except when he is being commanded to disobey [G'd]. Surely, if he is commanded to disobey, then he should not hear nor obey."

(Narrated in Sahih Muslim with similiar wording in Al-Bukhari)