Reference for Yevamot 131:4
מתני׳ <big><strong>אלמנה</strong></big> לכהן גדול גרושה וחלוצה לכהן הדיוט הכניסה לו עבדי מלוג ועבדי צאן ברזל עבדי מלוג לא יאכלו בתרומה עבדי צאן ברזל יאכלו
THE FOLLOWING ARE ZON BARZEL SLAVES: IF THEY DIE, THEY ARE THE LOSS OF THE HUSBAND AND, IF THEIR VALUE INCREASES, ARE A PROFIT TO HIM. SINCE HE IS RESPONSIBLE FOR THEM,<span class="x" onmousemove="('comment',' He or his heirs must restore them to his wife in a healthy condition should he divorce her or die. ');"><sup>8</sup></span> THEY ARE PERMITTED TO EAT <i>TERUMAH</i>. IF THE DAUGHTER OF AN ISRAELITE WAS MARRIED TO A PRIEST, AND SHE BROUGHT HIM IN SLAVES, THEY ARE PERMITTED TO EAT <i>TERUMAH</i> WHETHER THEY ARE <i>MELOG</i> SLAVES, OR ZON BARZEL SLAVES.<span class="x" onmousemove="('comment',' The reason is given in the Gemara. ');"><sup>6</sup></span>