[1] Mustafa was one of the schoolboys who made their first-class debuts for Pakistan Combined Schools against the touring Indian Test team in February 1955.
[2] Mustafa's stated birth date was 7 March 1944, which would have made him only 10 years old during the match, and the youngest first-class cricketer of all time, but in later life he revealed that he had been "actually about 15".
[3] He played first-class cricket in Pakistan irregularly until 1969–70, but his career was hampered by injuries sustained in a car accident.
[3] He scored one century, 110 for Karachi C against Sind A in 1957–58, when he added 165 for the fifth wicket with Salimuddin, one of his former teammates in the Pakistan Combined Schools team.
[4] He toured the UK and Ireland with the Pakistan Eaglets in 1959, and opened the batting for the Karachi team that won the Ayub Trophy in 1964–65.