We always say "Nanak naam chardikala, tere bhaane sarbat da bhala". We just say it, but never pay attention to what it really means. Obviously it has more than one and deep meaning. Everyone according to their level conceives it. "Nanak Naam Chardikala" - Guru Nanak Sahib ji ne jehra naam/shabad dita hai "waheguru" ya jiwein aapan kehnde han "Dhan Guru Nanak Tuhin Nirankar", onu japan de naal hamesha chardikala rehndi hai, kyonki "waheguru" naam ta aap chardikala da saroop hai ate saareya nu c