Arba'un 5 — whoever introduces into this matter of ours

الأربعون 5 — من أحدث في أمرنا

Aisha bint Abi Bakr's hadith, the fifth of al-Nawawi's Forty and of Ibn Rajab's commentary; in Muslim's wording, 'whoever does an act that is not upon our command has it rejected'. Transmitted by al-Bukhari (2697) and Muslim (1718) through al-Qasim ibn Muhammad from his aunt Aisha, and also by Ahmad, Abu Dawud (4606), Ibn Majah (14), Ibn Abi Asim in al-Sunna and others; Ibn Rajab makes it a great foundation — the scale of deeds in their outward form as the hadith of intentions is their scale inwardly — and defers the discussion of innovations to his commentary on the hadith of al-Irbad ibn Sariya (hadith 28) (Jami' al-Ulum wal-Hikam pp. 155–171).