Nowadays, on the date referred to, Jews do not wear their
tallith and phylacteries at morning prayer; by this act laying
aside the outward signs of their covenant with God; but,
contrary to custom, they put them on in the evening, when the
fast is nearly over.
He who does any work on the ninth of Ab will never see even a sign of
blessing. The sages say, whoso does any work on that day and does not
lament over Jerusalem will never see her joy; for it is said (Isa. lxvi.
10), "Rejoice ye with Jerusalem, and be glad with her; rejoice for joy,
all ye that mourn for her."
THE TALMUD, _Taanith_, fol. 30, col. 2.