Reference for Pesachim 220:10

אמר רבינא משמיה דרבא זוגי לחומרא ואמרי ליה זוגי לקולא אמר רב יוסף תרי דחמרא וחד דשיכרא לא מצטרף תרי דשיכרא וחד דחמרא מצטרף

R''Awira said: Plates and loaves are not subject to even numbers. This is the general rule: That which is completed by man is not subject to even numbers; [but in the case of] that which is completed by Heaven, such as various kinds of eatables, we fear [even numbers].

Jastrow

Jastrow

Jastrow

Jastrow

Jastrow

Jastrow

Jastrow

Jastrow

Jastrow

Jastrow