If Muslims living off India and living off the hospitality of Hindus ( because when undivided India was divided on communal lines, then the Muslims who stayed back are no doubt our honoured guests and maybe equal citizens, but not special angels to be pampered) do not want to salute India through Vande Mataram, then they can close their eyes while singing the salutation song and imagine Pakistan. There is not a single reference in the song to India and Muslims must also sing it. But if they want to clutter their mind with dirty thoughts, we have no control over their minds (they themselves do not have control). Arjun Singh has already climbed down by saying that only those who want can sing. He does not deserve to be HR minister.
