books which are today collectively known as 'Roohani Khazain'. After 25 years he wrote the fifth volume of Braheen-e-Ahmadiyya and in its preface he wrote:
Baada ya hap akarejea kuandika juzuu ya tano ya Braheen-Ahmadiyya kisha katika neno la awali la juzuu hiyo akatahayari kuandika ifuatavyo: