Mambo Ya Walawi 23:6

Siku ya kumi na tano ya mwezi huo wa kwanza, Sikukuu ya Bwana ya Mikate Isiyotiwa Chachu huanza; kwa siku saba, mtakula mikate isiyotiwa chachu.

And on the fifteenth day of the same month is the feast of unleavened bread unto the LORD: seven days ye must eat unleavened bread.