Hasin Yanith was the son of former Bajoran Resistance fighters Hasin Arnit and Limis Vircona. He was named after a friend of Limis's since her infancy and was conceived the night before the older Yanith died from injuries inflicted by Cardassians.
At some time prior to the end of the Occupation, Limis left Bajor with young Yanith in the hope of searching for a better life. (Star Trek: Lambda Paz: " Revenge a Dish Best Served Cold", " The Tides of War, Part 1")
As the son of a member of the Maquis, the younger Hasin was relocated to Tevlik's moonbase, which was supposed to be a safe-house for relatives of members of the Maquis. Colony leader Arak Katal provided the Dominion with the colony's location. For more than a year, Limis was left to wonder whether he was dead or alive. His mother tried to rationalize not looking for him during that time as needing to assure the survival of some of the last remaining vestiges of the Maquis. (VOY novel: Enemy of My Enemy, Star Trek: Lambda Paz: "The Tides of War, Part 1")
Limis was spurred to look for Hasin when Gul Enic Hadar threatened to kill him as retribution for the death of his brother. Limis was convinced that Hadar's threat was a means to lure her off the USS Lambda Paz. His first attempt to capture her failed and her investigation of refugees from Tevlik's moonbase hit a dead end. Hadar did, in fact, have Hasin in his custody. His mother was not aware of this until Hadar lured the Lambda Paz into an ambush in the Briar Patch and threatened to kill him again if she did not surrender herself. She called his bluff, but later surrendered herself after a fleet of Jem'Hadar and Cardassian warships and the Patch's metreon clouds inflicted heavy damage on her ship. (Star Trek: Lambda Paz: "The Tides of War, Part 1")