Deuteronomy 14:28,29
At the end of three years you shall bring forth all the tithe of your increase the same year, and shall lay it up within your gates:
Torrey's Topical Textbook—AKJV

Deuteronomy 26:12-15
When you have made an end of tithing all the tithes of your increase the third year, which is the year of tithing, and have given it to the Levite, the stranger, the fatherless, and the widow, that they may eat within your gates, and be filled;
Torrey's Topical Textbook—AKJV