Items consecrated for the Altar combine with one another for me’ilah, and to make one liable on their account for piggul, nossar, or tamei. Items consecrated for Temple up- keep combine with one another [for me’ilah]. Items consecrated for the Altar and items consecrated for Temple upkeep combine with one another for me’ilah.

Five components of an olah combine with one another: the meat, the cheilev, the flour, the wine, and the oil. Six [components] of a todah [combine with one another]: the meat, the cheilev, the flour, the wine, the oil, and the loaves. Terumah, terumas maaser, terumas maaser of demai, challah, and bikkurim, combine with one another to prohibit, and to make one liable on their account for the [surcharge of] one-fifth.

All piggul [foods] combine with one another. All nossar [foods] combine with one another. All neveilos combine with one another. All shera- tzim combine with one another. The blood of a sheretz and its meat combine with each other.  R’ Yehoshua stated a general rule: All [items] whose tumah [transmission] and [minimum] measure are the same, combine with one another. [If] their tumah [transmission is the same] but not their [minimum] measure, [or if] their [minimum] measure [is the same] but not their tumah [transmission], [or if] neither their tumah [transmission] nor their [minimum] measure [are the same], they do not combine with one another.

Piggul and nossar do not combine with each other, because they are two [distinct] names. A sheretz and neveilah, as well as neveilah and flesh of a [human] corpse, do not combine with each other to transmit tumah even like the more-lenient [aspect] of the two. Food that contracted tumah from an av hatumah and [food] that contracted tumah from a vlad hatumah combine with each other to transmit tumah like the more-lenient [aspect] of the two.

All foods combine with one another: to disqualify one’s body with half a peras; for the food of two meals for an eruv [techumim]; for the egg’s volume to transmit the tumah of foods; for the dried fig’s volume for carrying out [of a domain] on the Sabbath; for the date’s volume on Yom Kippur.  All beverages combine with one another: to disqualify one’s body with a revi’is and for the “fill of a cheek” on Yom Kippur.

Orlah and kilayim of the vineyard combine with each other. R’ Shimon says: They do not combine.  Cloth and sack, sack and hide, hide and a mat, combine with one another. R’ Shimon says: Since they are fit to contract tumah as a seat.