It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that once the Prophet (peace and blessings be upon him) delivered a sermon in the Sacred Sanctuary, at that time his (peace be upon him) back was towards the Multazam.
Hadith Referenceمسند احمد / ومن مسند بني هاشم / 3280
Hadith Gradingحکم دارالسلام:إسناده ضعيف، لضعف عبدالله ابن المؤمل