Hazrat Moulana Ashraf Ali Thanwi (ra) in Bashti Zewar (p373) has said, “The use of fireworks on certain occasions or festivals is objectionable and not permitted. It is a sheer waste of money and the Holy Quran has condemned such persons as the brethren of satan who indulge in such waste of money. In a verse it is said that Allah loveth not the wasters and extravagant, that is, he detests them.”
Secondly, there is the risk of one being burnt or the property may catch fire. To use fireworks is to risk one’s and others life and property. Hence, Shariat does not permit it.
(Bashti Zewar p.373)
Therefore, we could derive that fireworks are unlawful and the selling of such things and the income gained will be unlawful.
The income earned from such dealings should be given to Charity without the intention of thawaab (reward).
(Shami P.553 v.9)
Mohammed Tosir Miah
Darul Ifta Birmingham.