Widows: Laws Respecting: To Have a Share of the Triennial Tithe
Source: TTT
Deuteronomy 14:28, 29
At the end of every three years, bring a tenth of all your produce for that year and lay it up within your gates. / Then the Levite (because he has no portion or inheritance among you), the foreigner, the fatherless, and the widow within your gates may come and eat and be satisfied. And the LORD your God will bless you in all the work of your hands.
Deuteronomy 26:12, 13
When you have finished laying aside a tenth of all your produce in the third year, the year of the tithe, you are to give it to the Levite, the foreigner, the fatherless, and the widow, that they may eat and be filled within your gates. / Then you shall declare in the presence of the LORD your God, “I have removed from my house the sacred portion and have given it to the Levite, the foreigner, the fatherless, and the widow, according to all the commandments You have given me. I have not transgressed or forgotten Your commandments.