Case analysis

Ghalib, Faiz, and Iqbal mutually decided to beat up Rumi. One evening, they gathered near a secluded area through which Rumi passed every evening while returning home after work. Ghalib and Iqbal followed Rumi from a distance whereas Faiz was waiting with hockey sticks a little further. Suddenly, Ghalib attacked Rumi from behind, casting blows on him. Iqbal, on the other hand, blew a whistle indicating Faiz to come with the hockey sticks. Upon Faiz’s arrival, Ghalib and Faiz started beating up Rumi severely whereas Iqbal stood by the side watching the fight. In the meantime, Rumi’s eyes fell on a knife lying nearby. He picks up the knife and ran it through Faiz’s chest. In a state of confusion, Iqbal rushed towards Faiz, picking up a hockey stick. However, Rumi thinking that Iqbal was about to attack him lifted the knife and inflicted grievous hurt on Iqbal in the process. Keeping in mind the aforementioned facts, determine the criminal liability, if any, of Ghalib, Faiz, Iqbal and Rumi. In each case substantiate your answer with the sufficient reason and case law wherever required.