"What issues from your lips" — a positive commandment.
"and you shall do": This is an exhortation to beth-din to make you do (what you have vowed).
"to the L-rd your G-d": These are sin-offerings, guilt-offerings, burnt-offerings, and peace-offerings;
"that you spoke": These are consecrations for Temple maintenance;
(Devarim 23:25) "If you come into the vineyard of your neighbor, you may eat grapes so as to satisfy your soul": "If you come into the vineyard of your neighbor": I might think (that the verse speaks of) any man (who enters the vineyard); it is, therefore, written (Ibid.) "but into your vessel you shall not pace them." (You shall place them, however,) into the vessels of the owner, (for whom you are working).