Muhammad bin Ali bin Husayn (may Allah have mercy on him) said: Sayyiduna Husayn (may Allah be pleased with him) set out towards his land that was on the outskirts of al-Harrah, and we were walking when we caught up with Nu'man bin Bashir (may Allah be pleased with him), who was riding a mule. He dismounted, brought it near to Sayyiduna Husayn (may Allah be pleased with him) and said: Ride, O servant of Allah! He disliked that, but Nu'man kept adjuring him by oaths until Sayyiduna Husayn (may Allah be pleased with him) agreed to ride. He said: Since you have adjured me, you have obliged me to do something I dislike. You ride on the front of your mount and I will ride behind you, for I heard Fatimah bint Muhammad (peace and blessings be upon him) say: The Messenger of Allah (peace and blessings be upon him) said: "A man has the greatest right to the front of his mount, the head of his bed, and to lead the prayer in his own house, except for an imam with whom the people gather." Nu'man said: The daughter of Muhammad (peace and blessings be upon him) has spoken the truth. I heard my father Bashir say the same as what Fatimah said, and the Messenger of Allah (peace and blessings be upon him) said: "Except for the one who is given permission." So Sayyiduna Husayn (may Allah be pleased with him) rode on the saddle, and the Ansari (Sayyiduna Nu'man, may Allah be pleased with him) sat behind him.
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 19228