BR 259:3(1) :בשעת חדותה חדותה בשעת אבלה אבלה‏ : there is a proper time for rejoicing and a proper time for mourning
See the entire entry for ˀĕḇel, ˀe/aḇlā n.m. mourning, grief

BR 259:3(1) :בשעת חדותה חדותה‏ : at the time of joy, (there should be) joy
See the entire entry for ḥăḏū, ḥăḏūṯā n.f. joy

BR 259:3(1) :בשעת חדותה חדותה בשעת אבלה אבלה‏ : joy in its proper time and mourning in its proper time
See the entire entry for šāˁā, šāˁtā n.f. hour; moment of time