I heard the Messenger of Allah ﷺ say, "The affairs of the Children of Israil remained balanced until there arose among them the muwalladun, the sons of women taken captive from other nations. They began to issue rulings based on personal opinion, so they went astray and led others astray."
حدثنا سويد بن سعيد حدثنا ابن أبي الرجال عن عبد الرحمن بن عمرو الأوزاعي عن عبدة بن أبي لبابة
سمعت رسول الله ﷺ يقول لم يزل أمر بني إسرائيل معتدلا حتى نشأ فيهم المولدون أبناء سبايا الأمم فقالوا بالرأي فضلوا وأضلوا
No references are available.
[Its isnad is daif] Reported by Tabarani, as in Jami Saghir of Suyuti.Abdah did not meet Ibn Amr (Tuhfat Ashraf 6/360), and Haritha bin Abu Rijal is daif (Taqrib). It has a daif corroborating witness narration in Bazzar.