Guru Hargobind ji, the 6th Guru of Sikhs, is the pioneer of the concept of "Miri-Piri" and "Sant Sipahi." He wanted his Sikh brothers to imbibe the character of 'Sant Sipahi' and he wore two swords, one of Miri (temporal power) and other of Piri (spiritual power). He asked his Sikh brothers to practice weapons and acquire other skills along with doing spiritual practices and held their head high.
What do these words mean?
Miri: This word has come from the Persian word “miri”, which itself comes from the Arabic “Amir”. The word "Amir" (which is pronounced as "a-MEER") literary means commander, governor, lord, prince, ruler, chieftain, etc. and signifies temporal power or material power. The concept of Miri signifies worldly, materialist and political power. The concept is linked to the traditional power enjoyed by kings and ruler where the might of the military resulted in the power and ability to rule or influence the people.
Piri: This word has again come from the Persian word “pir” which literary means saint, holy man, spiritual guide, senior man, head of a religious order and stands for spiritual authority. The concept of "Piri" is linked to the power enjoyed by religious leaders, church priests, qazis, pandits, etc. to have power or influence over the devotees by way of "spiritual power" or religious power. The words miri and piri are now frequently used together to give the concept promoted by the sixth Guru.
Miripiri, compound of two words, both of Perso Arabic origin, adapted into the Sikh tradition to connote the close relationship within it between the temporal and the spiritual. The term represents for the Sikhs a basic principle which has influenced their religious and political thought and governed their societal structure and behaviour. At the Guruship (succession) ceremony, the Guru Hargobind Singh ji asked for two kirpans to be donned on him; one to symbolize the concept of Miri or temporal authority and the second to symbolize the concept of Piri or spiritual authority. The wearing of two swords was a departure from previous Guruship tradition when only the "salli" (for spiritual power) was worn by the preceding Gurus.
For many years now, the Sikh community worldwide have honoured the sixth Guru's vision of Miri and Piri and have celebrated this vision every year by calling this day the - Miri Piri Divas or the Miri Piri Day.