he was the only man in history who was supremely successful on both the religious and secular levels”. (Michael Hart “The 100: A Ranking of the Most Influential Persons in History”. New York. 1978, p. 33).
Ibn Al-haaj (may Allah have mercy on him) mentioned that one of the bid?ahs on ?Aashooraa? was deliberately paying zakat on this day, late or early, or slaughtering a chicken just for this occasion, or -in the case of women- using henna. (Al-madkhal)