Kabir was born into a political Bengali Muslim Zamindar family known as the Taluqdars of Chechrirampur in Kathalia, Jhalokati, then under the Backergunge District.
The family traced their ancestry to Tendur Khan, a claimed descendant of Sultan Sher Shah Suri, who first settled in Faridpur from Sasaram.
Tendur Khan then settled in Chechrirampur, and was given the taluq of Syedpur Pargana.
His paternal uncle, Nurul Husayn Khan Nanna Mia, was an associate of Huseyn Shaheed Suhrawardy and editor for the All-India Muslim League Volunteers Force.
[1] Kabir was elected to parliament from Jhalokati-1 as a Jatiya Party candidate in 1986 and 1988.