Reference for Shevuot 29:10

אמר רמי בר חמא אין העזרה מתקדשת אלא בשירי מנחה מאי טעמא כירושלים מה ירושלים דבר הנאכל בה מקדשה אף עזרה דבר הנאכל בה מקדשה

with reference to a meal offering: an offering made by fire, a sweet savour [unto the Lord].<span class="x" onmousemove="('comment',' Lev. II, 2.');">²⁰</span> This teaches us that it is the same whether one gives much or little, as long as he directs his heart to his Father who is in Heaven! - Well then, that which is [inevitably] the larger in the thanksgiving offering, and which is it? The leaven.

Jastrow