Reference for Menachot 18:15

דאיבעי' להו לדברי האומר שירים שחסרו בין קמיצה להקטרה מקטיר קומץ עליהן אותן שירים מה הן באכילה

implies that if it had diminished, however little, it is invalid; and 'of the oil thereof'.<span class="x" onmousemove="('comment',' Lev. II, 2. The amount of the flour of a meal-offering is fixed at a minimum of one tenth part of an ephah, and of oil at one log.');">²²</span> implies that if it had diminished, however little, it is invalid.

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