Syedna Qasim Khan Zainuddin (R.A) has performed khidmat ofSyedna Dawood bin AjabShah (R.A).Syedna Dawood bin QutubShah (R.A) bestowed Rutbah of Haddiyat on Him. He was amongst the 'Hudud Fozala'(council of wise men) during the regime of Syedna Dawood bin Qutubshah (R.A). He had the good fortune of serving 5 Duat Akrameen. He strived especially hard to serve Syedna Shaikh Adam Safiyuddin (R.A)and was his trusted aide. He sent Hudud around India to spread the word of Dawat.
Syedna QutubKhan Qutbuddin (R.A) was his trusted aide and he always turned to him for advice. Syedna QasimKhan Zainuddin (R.A), when the 'wafat' came nearer declared nass upon Syedna QutubKhan Qutbuddin (R.A). Syedna QasimKhan Zainuddin (R.A) departed for his heavenly abode on the 9th of Shawwal 1054 AH.
