How...????
Rishabh may have wanted everything in his name. so he tried to kill Tripti.
If you noticed in todays episode, Tripti said why did he do this to me...?????
Meaning she herself was suprised at who attacked her, so there is only one person and that is Rishabh, because she herself would not have been so shocked, if it was a member from the Virani family. She wouldn't have said Why did he do this to me???? Cause she herself knows that she would have deserved it, if it was. But she is in a way heartbroken at knowing who attacked her.