Chabad.org — English translation + Rashi
Torah Temimah points to Zevachim 25b.
E-Daf.com — Zevachim 25b
HebrewBooks / Shas PDF
English: If he received with his left hand — it is invalid, as it is said “and he shall take” — with the right hand.
Right-hand requirement for kabbalah — reception of the blood must be performed with the right hand; left-hand reception is invalid.
Reception of the blood must be performed with the right hand; left-hand reception is invalid. The verb “and he shall take” is understood to require the right hand for the kabbalah of the blood of the High Priest’s bull. Reception performed with the left hand fails to fulfill the required act and renders the blood invalid for the subsequent service.