In 1969, he moved to the Dar es Salam office, where he is credited, together with the manager (Lucius Thonya), with developing the important and lucrative Swahili publishing programme there.

These projects meant that OUP was well placed to respond to the demand created by Julius Nyerere's 'Education for Self Reliance' and the introduction of Swahili as a teaching medium in Tanzanian schools.

Commemoration ceremonies were held, to honor him, in different parts of the world, including Kenya,[6][7][8][9][10][11] Tanzania,[12][13] Zanzibar,[14] Indonesia,[15] Iran,[16][17][18][19] United Kingdom[20][21] and many others.

[22] Kenya's Deputy President, at that time, William Ruto eulogised him as "an academic giant, an astute political thinker and a faithful force for development who made a huge contribution to the aspirations of the Coastal Region.

"[24] Mombasa's Governor Hassan Ali Joho eulogised him as "a highly revered scholar, a literary genius and  a man of impeccable character.

"[27] Yusuf Hassan, the Member of Parliament for Kamukunji Constituency, eulogised him as "a progressive Islamic scholar, political leader & writer, who fought for freedom, equality and justice.

"[28] During a commemoration ceremony, held online and in person on Tuesday, January 18, 2022, many Islamic scholars eulogised Sheikh Abdilahi Nassir including: Hojat al-Islam Sayed Morteza Morteza Al-Ameli, who was quoted saying, "I found Sheikh Abdillahi Nasir a noble scholar, a distinguished writer, and a humble man who spent most of his time serving the religion.

The award was issued to senior citizens who attended the Lancaster House conference, in the United Kingdom, which gave birth to the Constitution for Independent Kenya.

[31] In April 2011 at the 72nd Supreme Council Session in Mombasa, the then Africa Federation Chairman Alhaj Anwarali Dharamsi bestowed the Abbasi Medal to Sheikh Abdillahi Nassir in recognition of his long outstanding, honorable and dedicated services in the cause of Islam and for propagating the madh'hab of Ahlul Bayt ('A).