Responsa for Niddah 85:29

תרגמא רב הונא

— There it is different, since the emergence of most of the semen was perceived. Others have a different reading: Samuel ruled, Any semen which does not shoot forth like an arrow causes no fructification. It is only fructification that it does not cause but it does cause uncleanness, for it is said in Scripture. If there be among you any man, that is not clean by reason of that which chanceth him,<span class="x" onmousemove="('comment',' Deut. XXIII, 11, mikreh of the rt. [H] (v. foll. n.). ');">²⁸</span>

Maharach Or Zarua Responsa