Inna lillahi wa inna illayhi raji'oun. Ameen to the duas.
And if anybody wants more information about him, here it is:
one of our great scholars from ahl us sunnah passed away. may Allah (SWT) have mercy on him and forgive him his sins. Indeed the passing of our scholars is very sad. It is with great sadness that I announce the passing away of Shaykh ‘Abd al-Ghaffar Hasan this morning in Islamabad, Pakistan. The Shaykh has been ill for some time now. You will probably know of the Shaykh in that he was the father of our beloved teacher Shaykh Suhaib Hasan and thus the grandfather of Imam Usama Hasan of Leyton, East London.
This is incredibly sad news for many of us who benefitted from him and not just for the obvious news of the loss of more of our senior scholars as we slip further into times of ignorance.
Inna lillahi wa inna ilayhi raji’un.
Please take some time out to ask Allah ‘azza wa jall to shower His Mercy upon him.
The Janazah prayer will be held tomorrow in Islamabad after the Jumu’ah prayer insha’Allah, almost certainly at King Faisal Masjid for those fortunate enough to be there to pray over him.
Rahimahullah rahmatan wasi’ah.
A Short Biography of Sheikh Abdal Ghaffar Hasan:
His name is Abdul Ghaffaar Hasan the son of Shaykh Haafidh Abdus Sattaar Hasan, born in 1331H corresponding to 1913CE in Amrpoor; a district of Muzaffarnagar.
He was from a family who were firm upon on the Qur’aan and Sunnah and his father, grandfather and other family members were major scholars of their time. Some of them were students of the great hadeeth teacher Shaykh ul-Qul fil-Qul Mian Nazeer Muhaddith Dehlawee.
The Shaykh completed Dars Nizaamee from Daar ul-Hadeeth Rehmaania in Delhi in 1933. He then went to the universities of Lucknow and Punjab and graduated from there in 1935 and 1940 respectively. He taught in various institutions during his life. He taught hadeeth, Arabic and its associated sciences in Madrassah Rehmaania for 7 years. He then taught in Madrassah Kawthar al-Uloom and other institutions around Pakistan; in Lahore, Sialkot, Rawalpindi, Faisalabad, Sahiwal and Karachi up until 1964. In 1964 he was requested to teach in Jaami Islaamiyyah Madeenah Munawwarah; he taught there for 16 years. He delivered lectures on hadeeth, uloom al-hadeeth and on Islaamic beliefs. During this time he also delivered lectures in the faculties of Sharee’ah, Usool-ud-Deen and Kuliyatul-Hadeeth Then between 1981 and 1985 he taught the monumental work, Saheeh al-Bukhaaree in the faculty of Islaamic Education in addition to other sciences.
His Efforts in Da’wah:
Post 1985 he worked with Daar ul-Iftaa Saudia and in this regard he travelled to various countries to establish the da’wah. Some of the countries he travelled to include:
During his stay in Kenya, he established an institution by the name of Saaniwiyyah where he started to teach the various sciences of Islaam. On his return to Saudi Arabia he was sent to London, England to help with the da’wah efforts there. He established another institution in London by the name of The Qur’aan and Sunnah Society.
His teachers were:
- Shaykh ul-Hadeeth Shaykh Ahmadullaah
- Shaykh ul-Hadeeth Ubaidullaah Mubaarakpooree (wa Rehmaanee)
- ShaykhNazeer Ahmad A’zamee
- Shaykh ul-Hadeeth ShaykhMuhammad Soortee (Ustaadh Jaamia Rehmaania)
- And for a short while he studied with the great hadeeth scholar AbdurRahmaan Mubaarakpooree 
Some of his students are:
- Shaykh Abdul Ghafoor Multaanee
- Shaykh Rabee Ibn Haadee al-Madkhalee
- Shaykh Abu Usaamah Ibn Eed al-Hilaalee
- Allaamah Ihsaan Zaheer Ilahi
- Shaykh Abdur-Rahmaan
- Shaykh Abdullaah
- ShaykhMas’ood Alam
- Shaykh Abdul Hakeem.
- ShaykhMuhammad Basheer Siyaalkotee
- ShaykhMuhammad Abdullaah
- Shaykh Haafidh Ahmadullaah
- His three sons, all graduates of Madeenah University, Suhaib, Suhail and Raaghib Hasan.
And many more…
The Shaykh is an excellent writer and his mastery over the language is evident from his works. During his life the Shaykh authored a number of books but more so he wrote a great number of articles for the various Ahlul-Hadeeth magazines in India and Pakistan. He has authored many treatises in refutation of the Qaadiyaanee’s. Some of his other well known works include:
- A Selection of Hadeeth 
- The Status of Women In Islaam
- The Reality of Du’aa
- Exaggeration in the Religion
- The Greatness of Hadeeth 
1 He is the author of Tuhfatul Ahwadhee.
2 This is a compilation of about 400 ahaadeeth with brief explanations.
3 This book is a great treasure in the field of hadeeth; it provides answers to the doubts and allegations of people who reject ahaadeeth.