R. Yossi Haglili says: I might think that the seven years (of loan-shemitah) are individual; it is, therefore, written (in this respect, Ibid. 15:9) "The seventh year has drawn near, the year of shemitah." If seven years for each individual, how has it drawn near? It must be, then, that the seven years are universal (and not individual).
Rebbi says: I might think that money-shemitah obtains nowadays; it is, therefore, written (Ibid. 2) "And this is the word of the shemitah; release, etc."
— When you release land, you release money; but outside of Eretz Yisrael, where you do not release land, you do not release money.