Mishnah: One who buys the produce of a dovecote from another, i.e., the doves that will hatch over the course of the year in a dovecote, must leave [mafriaḥ] the first pair of doves from the brood for the seller. If one buys the produce of a beehive, i.e., all the bees produced from a beehive over the course of the year, the buyer takes 3 swarms and then the seller renders the bees impotent, so that they will stop producing offspring and instead produce only honey. One who buys honeycombs must leave two combs. If one buys olive trees for felling, he must leave two shoots for the seller.
גמ׳ והתניא: בריכה ראשונה ושניה! אמר רב כהנא: לא קשיא; הא לה, הא לאמה.
Talmud: The Mishnah teaches that one who buys the brood of a dovecote must leave the first pair of the brood for the seller. The Talmud asks: But isn’t it taught in a baraita that one must leave the first and the second pairs of a brood for the seller? Rav Kahana said: This is not difficult. This statement in the Mishnah is referring to the pair left for the first pair of the brood itself, i.e., an extra pair of doves must be left behind to ensure that the first brood will not fly away. That statement of the baraita is referring to a pair left for the mother of the pair discussed in the Mishnah. In other words, the baraita is saying that one must leave a pair of doves for the mother, and later a second pair from the brood of her children, which is the pair mentioned by the Mishnah.