3.2.9 हरतेरनुद्यमनेऽच्

With कर्म उपपद हृ, when not in the sense of lifting up, has अच्. For example, अंशं हरतीति - अंश हृ अच् - अंश हर् अ, भागहर. Notice that भारं हरति leads to भारहारः as it involves lifting up.