Sanad of Mufti Mahmood Saheb Gangohi (RA)

I asked a question regarding the Sanad of Mufti Mahmood Saheb Gangohi (RA). (http://www.alislam.co.za/answers-ajax/) The answer was as follows: It is in his book ‘The life of Hadhrat Mufti Mahmood Gangohi’. I want more details regarding the book, where can I get it from, is there a PDF of the book, and which page is the Sanad mentioned? Also, remember I want the Fiqhi Sanad (not the Hadith Sanad). Jazakumullahu Khaira.
Wassalam