Sri Aurobindo
Letters of Sri Aurobindo
Volume I - Part 4
It is news to me that I have excluded Mahomedans from the Yoga. I have not done it any more than I have excluded Europeans or Christians. As for giving up one’s past, if that means giving up the outer forms of the old religions, it is done as much by the Hindus here as by the Mahomedans. The Hindus here – even those who were once orthodox Brahmins and have grown old in it,– give up all observance of caste, take food from Pariahs and are served by them, associate and eat with Mahomedans, Christians, Europeans, cease to practise temple worship or 
Sandhya (daily prayer and mantras), accept a non-Hindu from Europe as their spiritual director. These are things people who have Hinduism as their aim and object would not do – they do it because they are obliged here to look to a higher ideal in which these things have no value. What is kept of Hinduism is Vedanta and Yoga, in which Hinduism is one with Sufism of Islam and with the Christian mystics. But even here it is not Vedanta and Yoga in their traditional limits (their past), but widened and rid of many ideas that are peculiar to the Hindus. If I have used Sanskrit terms and figures, it is because I know them and do not know Persian and Arabic. I have not the slightest objection to anyone here drawing inspiration from Islamic sources if they agree with the Truth as Sufism agrees with it. On the other hand I have not the slightest objection to Hinduism being broken to pieces and disappearing from the face of the earth, if that is the Divine Will. I have no attachment to past forms; what is Truth will always remain; the Truth alone matters.