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It is believed that when Sufi poet Amir Khusrau reached NizamuddinAwliya'sdargah for the first time, he sent in a playful couplet seeking permission to enter. Keeping up with the jest,Nizamuddin replied with a witty one of his own, asking him to enter and to stay on if he was a man of virtue. This marked the beginning of a famous, lifelong partnership which stands as an example even today.