Reference for Sanhedrin 123:18

הנה אבות זיבוח קיטור ניסוך והשתחואה מהנה תולדות שבר מקל לפניה

'one transgression may involve liability for a number of sacrifices,' [i.e., 'one'='them']. e.g., when one knows that it is an idol [and that idolatry is forbidden], but is unaware that the particular acts in question constitute idol-worship;<span class="x" onmousemove="('comment',' E.g., knowing that sacrifice is forbidden, but thinking that burning incense and offering libations are permitted. ');">¹⁸</span>

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