When Self-Defense becomes Murder? A Conundrum in IPC Section 96

Maine kuch samajhaya hai IPC Section 96 mein abhi tak, lekin ek pehla case aya hai jo mujhe pata nahi lagta hai ki kya hua. Yeh case Reg. vs Kolimbarayan (1872) hai. Yahan ek aadmi ki patni ko uske dwaara kiya gaya haathphaeda aapko self-defense mein murder banata hai? Bas ek aadmi se baat karein to uske pas aagyaat hota hai kuch aise case jo logon ko confuse kar dete hain. Jaise ki woh aadmi apni patni ke liye aatankwaadi the?