What did the PM promise in the guest book on Mazar-e-Quaid?

After taking oath, the Prime Minister Shahbaz Sharif arrived at Pakistan Air Force’s Faisal Air Base on his first visit to Karachi, from where he visited mausoleum of the Founder of Pakistan, laid flowers and offered Fatiha, then The Prime Minister Shahbaz Sharif wrote the remarks in the guest book.
In his remarks, the Premier wrote that, Quaid! I respectfully attend your last resting place, I am grateful that you gave us a free country, Quaid! We sincerely apologize for not being able to follow the path you hoped for.
The Prime Minister further wrote that I will use my full potential for the betterment of the people, further adding that, Quaid! We will try to live up to your expectations.
At the end of the remarks, the Prime Minister wrote Khadim-e-Pakistan in place of his name.