It is narrated from a Companion (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) forbade "ghuluwat." Imam Awza'i (may Allah have mercy on him) explains its meaning as those issues in which there is severity and difficulty.
Hadith Referenceمسند احمد / مسند الأنصار رضي الله عنهم / 23687
Hadith Gradingحکم دارالسلام:إسناده ضعيف لجهالة عبدالله بن سعد