Mundhir bin Abu Usayd was brought to the Messenger of Allah ﷺ when he was born. The Prophet ﷺ placed him on his thigh while Abu Usayd sat beside him. Then something in front of the Prophet ﷺ distracted him, so Abu Usayd instructed that his son be taken, and the boy was lifted from the thigh of the Messenger of Allah ﷺ and carried away.When the Messenger of Allah ﷺ turned his attention back, he asked, "Where is the child?"Abu Usayd replied, "We sent him back, Messenger of Allah."He asked, "What is his name?"Abu Usayd said, "Such-and-such, Messenger of Allah."He said, "No, his name is Mundhir." So on that day he named him Mundhir.
حدثني محمد بن سهل التميمي وأبو بكر بن إسحق قالا حدثنا ابن أبي مريم حدثنا محمد وهو ابن مطرف أبو غسان حدثني أبو حازم
أتي بالمنذر بن أبي أسيد إلى رسول الله ﷺ حين ولد فوضعه النبي ﷺ على فخذه وأبو أسيد جالس فلهي النبي ﷺ بشيء بين يديه فأمر أبو أسيد بابنه فاحتمل من على فخذ رسول الله ﷺ فأقلبوه فاستفاق رسول الله ﷺ فقال أين الصبي فقال أبو أسيد أقلبناه يا رسول الله فقال ما اسمه قال فلان يا رسول الله قال لا ولكن اسمه المنذر فسماه يومئذ المنذر