I heard Abu Mushir being asked about Abna. He said, "We know better. It is Yubna in Palestine."
سمعت أبا مسهر قيل له أبنى قال نحن أعلم هي يبنى فلسطين
No references are available.
[Its isnad is sahih]. Bayhaqi (9/84) narrated it from the hadith of Abu Dawud through this same chain.