He worked with horses mostly in the stables and gained a knowledge about these magnificent creatures like no one else.
During the 1970s Ahmadu established a successful construction and development company called Songhai Pty Ltd based in Kaduna.
During the 1970s and 1980s Songhai Pty Ltd constructed major projects through Northern Nigeria for major commercial, industrial and Government clients such as UNTL, Zamfara (Textiles), Peugeot Automobile Nigeria, Borno, Plateau, Kano, and Kaduna State Governments.
Once even beating Prince Charles he was praised to be the worlds "best black back" as this was his position in polo.
The Kaduna Polo Club was renamed the "Ahmadu Yakubu Polo Ground" after his death, and now renamed as HRH Kabir Usman Polo Ground in order to honor the then emir of Katsina state Alhaji Abdulmumini Kabir Usman