It is narrated from Sayyiduna Ali (may Allah be pleased with him) that he said: "The Prophet (peace and blessings be upon him) made a peace treaty with Banu Taghlib on the condition that they would remain on their religion but would not make their children Christians," and they have certainly broken this covenant; so if I attain complete authority and power, I will kill their fighting men and take their offspring captive.
Hadith Referenceمسند أبي يعلى الموصلي / مسند علي بن أبي طالب رضي الله عنه / 323
Hadith Gradingمحدثین:إسناده ضعيف جدا
Hadith Takhrij«حکم الحدیث مسند ابی یعلی محققاً تنسیق حسين سليم أسد - مکتبہ شاملہ :قال حسين سليم أسد: إسناده ضعيف جدا . » «قال سعيد بن محمد السناري: منكر» «أخرجه عبد الرزاق [9975]، و [19393]، وابن عدى في "الكامل" [6/ 119]، وغيرهما، مسند ابویعلیٰ ترقیم الاثری: 318»