i file a civil suit for specific perfomnce of sale deed [banakhat] dated 21/10/2010, the suit i file a suit in the year 2021 , now when process of court ,summons notice issue to defandant , we came to know that the defandant no 3 is expired after signing the banakhat , in the year 2019, so in this situtation what is remedy , bcoz suti is file agaisnt the dead person defandant no 3 , and court oral says that the cpc o 22 rule 4 is not maintanable in this suit ...so how can i join the party , legal heirs of of defandant no 3