Answer
(Fatwa: 1152/993=L/1429)
Network marketing is neither based on partnership nor Muzarba (investment by one partner and work by other), rather it consists of many invalid conditions, and it is similar to lottery and gambling. Also, there is so much deception that in the greed of wealth it can trap the entire population in financial crisis. Therefore, it is Islamically unlawful to become its member or to take commission from the work of the persons below you while you do not have a share in their work.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband