Battle of Trench took place in 627, 5 th year of Hijra. The pagans attacked Madina because they wanted to eliminate Islam and to reopen the caravan route blocked by the Muslims. This time they were not alone. The other pagan tribes like Banu Bakr and the Jews of Khyber were also with them. They prepared a large army of more than ten thousand. When the Prophet (sw) came to know about this plan, he took advice from his companions. Salman Farsi (ra) advised the Prophet (saw) to dig a Trench around the three openings of Madina. The trench was prepared within twenty days before the attack. It was about five miles long, five meters wide and five meters deep. The Pagans’ army could not cross the trench and stopped. They stayed outside Madina for a month. During this time, they had internal differences. The expenditures were high and Arabs were not used to fight this kind of war of trenches. Finally Allah sent a wind storm and the united army of pagans and Jews ran away. The la...