"The holiest of the holy of the Sikhs, Nanakana Sahib, birthplace of Guru Nanak-analogous to the Mecca of the Muslims and Jerusalem of the Christians. This Gurdwara also had a vast estate, developed along model lines as a farming colony, and it yielded an annual revenue to the Sikh community of about 20 lakhs of rupees."
January 1, 1970
https://en.wikiquote.org/wiki/Nankana_Sahib