It is narrated from Hazrat Muawiyah (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) forbade "Ghuluwwat" (overly complicated or hair-splitting questions).
Hadith Referenceمسند احمد / مسند الأنصار رضي الله عنهم / 23688
Hadith Gradingحکم دارالسلام:إسناده ضعيف لجهالة عبدالله بن سعد