She gives him three drinks of milk, and with each drink he blesses her, healing her wounds. After one particularly arduous combat, Cú Chulainn lies severely wounded but is visited by Lug, who tells him he is his father and heals his wounds. When Cú Chulainn wakes up and sees that the boy-troop of Emain Macha have attacked the Connacht army and been slaughtered, he has his most spectacular "ríastrad" yet:  He attacks the army and kills hundreds, building walls of corpses. When his foster father Fergus mac Róich, now in exile in Medb's court, is sent to face him Cú Chulainn agrees to yield, so long as Fergus agrees to return the favour the next time they meet. Finally, he fights a gruelling three-day duel with his best friend and foster brother, Ferdiad, at a ford that was named "Áth Fhir Diadh" (Ardee, County Louth) after him. The Ulstermen eventually rouse, one by one at first, and finally "en masse". The final battle begins. Cú Chulainn stays on the sidelines, recuperating from his wounds, until he sees Fergus advancing. He enters the fray and confronts Fergus, who keeps his side of the bargain and yields to him, pulling his forces off the field. Connacht's other allies panic and Medb is forced to retreat. At this inopportune moment she gets her period, and although Fergus forms a guard around her, Cú Chulainn breaks through as she is dealing with it and has her at his mercy. However, he spares her because he does not think it right to kill women, and guards her retreat back to Connacht as far as Athlone. The troublemaker Bricriu once incites three heroes, Cú Chulainn, Conall Cernach and Lóegaire Búadach, to compete for the champion's portion at his feast. In every test that is set Cú Chulainn comes out on top, but neither Conall nor Lóegaire will accept the result. Cú Roí mac Dáire of Munster settles it by visiting each in the guise of a hideous churl and challenging them to behead him, then allow him to return and behead them in return. Conall and Lóegaire both behead Cú Roí, who picks up his head and leaves, but when the time comes for him to return they flee.