Blessed Hairs of the Prophet (peace be upon him)
Muslims show utmost respect and love to the figure of the Messenger (peace and blessings of Allah be upon him). This love and admiration extends to anything and everything that is associated with him. Our history testifies that the blessed hairs of the Prophet (peace and blessings of Allah be upon him) were devoutly respected by the Companions (may Allah be pleased with them all) and the pious ancestors after them.
Read about how the hairs were preserved and the act of viewing the hairs of the Prophet (PBUH)