Al Salamu 'Alaykum.“Once when Mawlana (Rashid Ahmad) Gangohi (rah) dictated an answer giving a reference to Shaami, a scholar objected that the ruling was certainly not in it. Hadrat asked for the book to be brought to him whereas he was blind by this time. Passing his hands over the breadth of the book, he made a rough estimation, turned to a page and said, 'Look at the bottom of the left page.'
It was exactly as he had stated."
Taken from ‘Ulama of Deoband by Madrasah Arabia Islamia, Azadville, SA.