Answer
(Fatwa: 366//344=L)
In order to sell an article first you have to take it in your possession, but the form of possession differs, it is not necessary to possess it physically, but if it is in your possession legally (i.e. it came in your risk) then you can sell it. I do not know what is the exact situation; whether the risk is transferred or not. Therefore, it is better (as caution) to avoid selling it until you take the delivery. It should be noted that this ruling is for selling after purchasing. If you send the detail of abovementioned transaction then we can have a say about the validity of the business as well.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband