Al-A'raf 7:87 وان كان طايفة منكم امنوا بالذي ارسلت به وطايفة لم يومنوا فاصبروا حتى يحكم الله بيننا وهو خير الحاكمين ٨٧

Prophet Shu`ayb forbade his people from setting up blockades on the roads, saying,

("And sit not on every road, threatening,") threatening people with death if they do not give up their money, as they were bandits, according to As-Suddi. Ibn `Abbas, Mujahid