Could you please let me know ASAP, and please can you not put this public. As my brother goes on these sort of sites and may know its me. I wouldn?t like my family to know about it. Jazakallukeer
There are two parts to your questions; firstly is that the aspect of masturbation is not permitted in Islam.
As for the second part the fact that you are masturbating does not effect the death of another person or can cause them any harm all that happens to us is from Allah and not by your actions. We will be accountable for our actions. It is only Allah that can give and take life. So your action of masturbation (which is not permitted) is not your fault.
and Allah Ta’ala Knows Best
Shaykh Irshaad Amod / Mufti Ebrahim Desai