That is ‘Live and let live’- and To unite persons, use common joint formula.
Mahtama Gandhi (freedom fighter of India) tried to effect a rapproachment between Hindus and Muslims. He started the formula noted below, where Rahim and Ram are put together. He also made his Hindu and Muslim followers repeat the formula or mantra.
“Raghupati Raghava Rajaram Patita paavana Sitaram,
Iswara Allah Tere nam, Sabko Sanmati De Bhagavan,
Rama Rahim Krishna Karim, Sabko Sanmati de Bhagavan.“
Mahatma Gandhi aimed to familiarise the ears of impartial and co-operatively minded Hindus and Muslims, with a mix of both cultures. This would help both groups to hear each other’s names without losing equanimity.
This would become easier and inspiring by habit for future generations. That was the great object of Mahatma Gandhi’s formula. Baba added to Gandhiji’s plan of work. He secretly worked on the hearts of all.
Baba was perfectly neutral and submitted to the peculiar idiosyncracies of his worshippers in order to avoid offending them. Left to himself Baba would have no mark on his forehead. Baba did not believe at all that there is a separate Siva and a separate Vishnu as Gods. ‘To him, there was only one God. It might be called Siva or Vishnu, Vittal, Rama or Datta. Khuda, Khandoba, Devi, Allah or Hari; might all be names given with equal justification’. “A rose by any other name would smell as sweet”.
If each wants to get on in his own way, he should do so. He should choose the way that suits him best. By all means, let him do so. He should not be hindered. This is the only way to unite all sincere worshippers. Sincere bhaktas’ worship of Sai is the same as the worship of God.
That is their feeling and according to correct metaphysics and philosophy, there is no difference between the worship of Sai treated as God and the worship of God under any other name or any other form. Both achieve the same ends.
“In whatever form you surrender to Me, in that form, I respond- BG (4) 11.
LoSB/Part I: Ch-XIV
"I draw to Me, My man from far off or even across the seven Seas to Shirdi, like a sparrow with a string fastened to its feet"-Shirdi Sai Baba, Indian Spiritual Guru-God 