Just have a look and compare the Mool Mantra of Guru Granth Sahib ji Vs Isha Upanishad 40.8 only Fools will Seperate Sikhs from Sanatan Dharma

Just have a look and compare the Mool Mantra of Guru Granth Sahib ji Vs Isha Upanishad 40.8 only Fools will Seperate Sikhs from Sanatan Dharma