Tobit 1:7

7 The first tenth part of all increase I gave to the sons of Aaron, who ministered at Jerusalem: another tenth part I sold away, and went, and spent it every year at Jerusalem:

Tobit 1:7 In-Context

5 Now all the tribes which together revolted, and the house of my father Nephthali, sacrificed unto the heifer Baal.
6 But I alone went often to Jerusalem at the feasts, as it was ordained unto all the people of Israel by an everlasting decree, having the firstfruits and tenths of increase, with that which was first shorn; and them gave I at the altar to the priests the children of Aaron.
7 The first tenth part of all increase I gave to the sons of Aaron, who ministered at Jerusalem: another tenth part I sold away, and went, and spent it every year at Jerusalem:
8 And the third I gave unto them to whom it was meet, as Debora my father's mother had commanded me, because I was left an orphan by my father.
9 Furthermore, when I was come to the age of a man, I married Anna of mine own kindred, and of her I begat Tobias.

The Brenton translation of the Septuagint is in the public domain.