米粒 こめつぶ うま やしじゃありません
kometsubu umakoyashija arimasen

Noun
Desu Copula
Negation Auxiliary

The polite negative form of 米粒馬肥やし

1. It is not as if a single grain of rice makes a horse fat.; It's not a small accumulation.

Negative
Polite
Terminal Form