Prayer: What is the rule of prayer and fasting for those in groups that are unjustly hostile toward each other?

Practical Laws of Islam as per the teachings of Imam Khamenei

Prayer: What is the rule of prayer and fasting for those in groups that are unjustly hostile toward each other?

English:

Question #720:

What rule applies to the prayer and fasting of those who belong to different groups that are jealous of and even hostile to one another for no reason?

Answer #720:

It is not permissible for a mukallaf to nurture envy, enmity and hostility towards others, but doing so does not invalidate one’s prayers and fasting.

-Imam Khamenei, Practical Laws of Islam, Importance and Conditions of Prayer