After which incident, Sir Syed Ahmad Khan predicted that gulf of differences between Hindus and Muslims of India shall widen with the passage of time?

After which incident, Sir Syed Ahmad Khan predicted that gulf of differences between Hindus and Muslims of India shall widen with the passage of time?

سرسید احمد خان نے کس واقعے کے بعد پیشین گوئی کی تھی کہ ہندوستان کے ہندوؤں اور مسلمانوں کے درمیان اختلافات کی خلیج وقت گزرنے کے ساتھ وسیع ہوتی جائے گی؟
Explanation

Sir Syed Ahmad Khan predicted the widening gulf between Hindus and Muslims after the Urdu-Hindu controversy in UP in 1867.

The controversy arose when Hindus demanded that Hindi replace Urdu as the official language in courts, which deepened religious and cultural divides.