Thank you for posting a plea.
This was not an accident, you did this intentionally.
You were asking for sand, as shown below, then you decided to pour the lava on him because he was attending something else, before attending you.
[13:43] <FamCraftIRC> (aobida_biadsy) sand pls
[13:43] <FamCraftIRC> (aobida_biadsy) sand man sand sand sand
[13:44] <FamCraftIRC> (C45_4_LifE) im sorting my stuff
[13:44] <FamCraftIRC> (aobida_biadsy) so?
[13:44] <FamCraftIRC> (aobida_biadsy) give me sand and i will go
[13:44] <FamCraftIRC> (aobida_biadsy) come on
[13:45] <FamCraftIRC> (aobida_biadsy) ?
[13:45] <FamCraftIRC> (aobida_biadsy) XD
[13:47] <FamCraftIRC> C45_4_LifE tried to swim in lava
It's obvious why you did this. We do not allow this sort of action in our server. We expect players to respect each other, and treat each other fairly.
I had tried talking to you about this, I had mentioned to you that you would be either perm-banned if you did not replace his items or payed him for his loss. I also mentioned, you will still be temp-banned for your actions.
Do you understand why you were temp-banned? What did you learn from this?