Q 3: Could you please tell us about ten lawful materials
in which one may trade?
It is permissible to trade in all materials that are free from unlawful mixtures. (Part No. 13; Page No. 28) This is based on the saying of Allah (Exalted be He):
...whereas Allâh has permitted trading
Anything that contains unlawful materials is also unlawful according to the saying of the Prophet (peace be upon him):
If Allah forbids something (to be consumed), He, with greater reason, forbids its price (selling it).
Some of the lawful things to deal in include the meat of camels, cows, sheep, birds that are lawful to eat, pigeons and chickens if they are slaughtered according to the Shari`ah (Islamic law). Other lawful materials include metal, copper, gold, silver, wood, grains, fruit and clothing. There are certainly more than ten lawful things to deal in. Really, there are much more than that.
May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.