I will say it again, its only upto Allah to make rules of what is of reward and what is of punishment. Please don't just guess your answers on behalf of Allah.
Hate is not sin. Acting out of personal hatered in a manner to cause harm to innocent people can be haram. Hate brings anger and rage. Those are despised behaviors because anger causes one to lose self control.
This is strictly for reasons other than Allah.
Now hate for the sake of Allah is a sign of iman. Example: Hating shirk or sharing partners with Allah is a sign of Iman, while Hating the person who holds partners with Allah is not.
In short, hate is not haram but acting out of it in certain circumstances is haram.
but kehna asaaan hai ..but nafrat ko khatam karna bohat mushkil hia
yani u mean to say nafrat ko khatam karna mushkil hota hai... tu yani phir abhi apki nafrat tu khatam nahin hoyee ho gi tu how cum u always say... khair forget it