Shaykh Nawab Eshrat ‘Ali Khan Qaiser (Allah preserve him) instructed,

‘To develop perfect congeniality of this path (tareeq) it essential that senior murid reads the biography of Hakim al-Umma, Ashraf us-Sawanih volume 2, Maasir e Hakim al Ummat and Tarbiyet us Salik. The intention should be to act on the information for his own reformation (islah).

Halaat e Eshrat wa Maktubat e Masih al-ummat ra, page 80