the search is massively hampered by the name being variously rendered as 'Husein', 'Hussein', 'Hosain', 'Hosayn', 'Husayn', 'Husain', 'Hussain'... - sometimes in the same book (referring to the same person)
the earliest finds are
1978 in the quarterly(?) 'the Light' by 'Bilal Muslim Mission of Tanzania' (Indian founded muslim mission)
1975 'Elia & Islam in Ancient Scriptures' by Peermahomed Ebrahim Trust (Pakistan founded muslim enterprise)
1973 'The Biography of Amir Mukhtar' by Ghulamali Ismail Naji (Peermahomed Ebrahim Trust)
the 1973 and 1975 books have an interesting peculiarity: just before the contested Dickens quote both have the (Gibbon-attributed) quote: "In a distant age and climate the tragic scene of the death of Husain (A.S.) will awaken the sympathy of the coldest reader." (Though, in one book it's 'climate' and in the other 'eliminate' (an obvious misreading + typo of 'climate')) - this 'parallel' quote is true: found in Edward Gibbon's 1790 'The History of the Decline and Fall of the Roman Empire
... perhaps someone can suss out where the Dickens one (1 century later than Gibbon) entered the quote-circus?