When Prophet Musa returned following his encounter with Allah only to find his people worshipping the Golden Calf, his anger at his brother Harun, who he had delegated in his absence, was uncontrollable. But when Harun appealed to their brotherhood, Musa prayed for forgiveness and mercy for both of them, immediately relieving the tension. When you pray for those who have upset you in their presence, it heals any previous damage to the relationship.
