Q. Can I purchase items on Gumtree or OLX classifieds or is it necessary for me to physically see the item before I purchase it online?
A. To physically see an item before purchasing it online or offline is not a condition for the validity of a transaction. Hence, such a transaction is valid.
N.B. Keeping in mind all the necessary conditions of a transaction, for e.g. ownership of an item by the seller at the time of a sale etc., such transactions will be valid.
Allah Ta’ala Knows Best
Mufti Ismaeel Bassa