What is the ruling on a pharmacist

Q: My name is Khamis Muhammad Hafizh. I am from Alexandria, the Arab Republic of Egypt. I am married and have children. I work in a company for a low salary. (Part No. 13; Page No. 106) Due to living circumstances, I have another job to increase my income. I mend, sell and buy gas lighters. Your Eminence know that this profession is surrounded with certain suspicious matters. Some people use these gas lighters for lighting cigarettes. I do not want to receive any unlawful money. These gas lighters are not only confined to lighting cigarettes but they are used for other purposes. Other people, as my mother, brother and others, use these lighters for lighting gas cookers in homes and the like. As I do not know how to distinguish between those who use them in lawful purposes and those who use them in unlawful ones, I asked some of my fellow Muslims about this point. Some of them told me that it is permissible to do so. Others told me to ask Your Eminence about it. What about the mending tools, lighters and pipes I have? Is it permissible to make use of these things? If these things are unlawful, can we sell them and make use of their price? If this work is permissible, can I keep on working in such a profession?May Allah reward you the best. (Part No. 13; Page No. 107) I am currently working in mending and selling gas lighters. Therefore, I would like to receive your answer as soon as possible.

A: It is permissible for you to make, mend or sell gas lighters. If some people use them for unlawful purposes, they will bear the sin of doing so. There is also no blame on you in having tools for mending these lighters. But if there are special lighters for lighting cigarettes, then you will not be permitted to make, mend or sell them. May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.