On the anniversary of partition, let’s consign the pitiless logic of Hindu v Muslim to the past | Pankaj Mishra and Ali Sethi

Since 1947, India and Pakistan have shared profound affinities across ferociously policed borders

• Pankaj Mishra is a novelist and essayist from India; Ali Sethi is a writer and musician from Pakistan

In a remarkable document from the 13th century, a Sufi writer records his epiphany about the prophet Muhammad granting permission to music in India. Quoting an enigmatic utterance of the prophet (I sense the breath of the Merciful coming from Yemen"), he speculates that the Yemen" in question is not just the region in the Arabian peninsula, but possibly also the popular Indian raga of the same name. These days, such an innocuous interpretation, linking the founder of Islam to northern Indian music, is certain to incite charges of blasphemy, and perhaps even calls for assassination, across many Muslim populations.

But it would have been uncontroversial, even unremarkable, during much of the last millennium, the centuries during which India was the world's busiest crossroads, receiving and transmitting cultural influences between east and west, north and south. Artists and thinkers in this time, when India played easy-going host to a polyphony of identities, were oblivious to today's hotly invoked distinctions of religion and gender. For instance, the 14th-century Sufi poet Amir Khusrau wrote qawwali, a poetic form derived from Arabic chants, using a female persona and with imagery derived from the cult of the Hindu god Krishna. Sri Ramakrishna Paramhamsa, India's most influential yogi in the 19th century, not only practised both Islam and Christianity; he spent many years dressed as, and imagining himself to be, a woman.