C. F. Keil and Franz Delitzsch on Nehemiah 5:16

Neh 5:16 “And also I took part in the work of this wall; neither bought we any land, and all my servants were gathered thither unto the work.” בּ החזיק = בּ יד החזיק, to set the hand to something; here, to set about the work. The manner in which Nehemiah, together with his servants, set themselves to the work of wall-building is seen from Neh 4:10, Neh 4:12, Neh 4:15, and Neh 4:17. Neither have we (I and my servants) bought any land, i.e., have not by the loan of money and corn acquired mortgages of land; comp. Neh 5:10.