It is narrated from Sayyiduna Jabir bin Abdullah (may Allah be pleased with them both): "When the Messenger of Allah (peace and blessings be upon him) walked, he did not turn to look back. Sometimes his (peace and blessings be upon him) blessed cloak would get caught on a tree or on something, and he (peace and blessings be upon him) would not turn round until the Companions (may Allah be pleased with them) freed it. The reason for this was that they (the Companions) would be joking and laughing among themselves, and they felt safe and at ease that he (peace and blessings be upon him) would not turn round to look."
Hadith Referenceالمعجم الأوسط / باب الباء / 3216
Hadith Takhrij«أخرجه الحاكم فى «المستدرك» برقم: 7889، والطبراني فى «الأوسط» برقم: 9014»