續一切經音義 2.85

2.85

鴛鴦（上於袁反下於薑反毛詩曰鴛鴦干飛傳曰鴛鴦疋鳥也言其止為疋偶飛則雙飛說文從夗央皆形聲字也）。

Mandarin ducks (鴛鴦: the first character has the fanqie 於 + 袁; the second has the fanqie 於 + 薑. The Book of Odes says, “The mandarin ducks fly in pairs.” The commentary says, “Mandarin ducks are paired birds, meaning they rest in pairs and fly in tandem.” Shuowen states that they take 夗 and 央 respectively; both are phono-semantic characters).