Reference for Menachot 38:4

רב סבר הא נמי תנא ביה קרא דכתיב (ויקרא ט, יז) ויקרב את המנחה וימלא כפו ממנה ושמואל דורות משעה לא ילפינן

and 'with his hand'<span class="x" onmousemove="('comment',' Ibid. VI, 8. So literally.');">⁵</span> signify that he shall not use a measure for the taking of the handful.<span class="x" onmousemove="('comment',' From these two phrases we learn that the priest must take out the handful with his hand and may not use a measure which holds as much as a handful for the purpose.');">⁶</span>

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