The Prophet (peace and blessings be upon him) said:
"You have more right than I do to the front part of your mount (that is, to sit at the front), unless you give that place to me."
Hadith Referenceصحیح الجامع الصغیر / حرف الألف / 1478
Hadith Gradingالألبانی:صحيح
Hadith Takhrij[حم د ت] عن بريدة. المشكاة ٣٩١٨ الإرواء ٤٨٧.