⚖️Two Parts of a Verse
Rava asks Rav Nachman: A teaching says a firstborn may be sold, but the same verse speaks of offering it on the altar. Rav Nachman answers that the sale refers to a blemished animal. The altar refers to an unblemished one.
Amud a 🗺️From Outside the Land
Abaye says a priest may acquire an unblemished firstborn from outside the Land of Israel. He cites Rabbi Shimon, who says that if such an animal is brought to the altar, it may be offered. Ravina uses this answer in another discussion about when a priest acquires a firstborn.
Amud b 💰A Fair Price?
Rav Hisda says a priest may sell a living, unblemished firstborn to another priest, but not to an Israelite. Rav Huna, son of Rabbi Yehoshua, worries that such a sale might look like a favor meant to win future firstborns. When Mar Zutra questions a sale, the buyers say they paid a fair price.
Amud b