Sayyidah Aishah Siddiqah (may Allah be pleased with her) narrates: The Prophet (peace and blessings be upon him) was among a group of the Muhajirun and the Ansar. Meanwhile a camel came and prostrated to the Prophet (peace and blessings be upon him). His Companions said: "O Messenger of Allah! Animals and trees prostrate to you, so we have more right to prostrate to you." The Prophet (peace and blessings be upon him) said: "Worship your Lord, and honour your brother." (Allamah al-Haythami says:) I say: After this he mentioned the full hadith.
Ahmad recorded it, and its chain is jayyid (good).