Abd al-Rahman bin Abi Umayyah al-Damri (may Allah have mercy on him) narrates that Sayyiduna Habib bin Maslamah al-Qurashi (may Allah be pleased with him) met Sayyiduna Qays bin Sa'd bin Ubadah (may Allah be pleased with him) while he (Habib) was riding a horse. Habib bin Maslamah moved back from the saddle and said to Qays: Mount. Sayyiduna Qays bin Sa'd (may Allah be pleased with him) said: I heard the Messenger of Allah (peace and blessings be upon him) say: "The owner of a mount has more right to its front." Sayyiduna Habib (may Allah be pleased with him) said: It is not that I am unaware of what the Messenger of Allah (peace and blessings be upon him) said; rather, I fear for your life.
Hadith Referenceالمعجم الكبير للطبراني / باب الحاء / 3521