Coffman Commentaries on the Bible - Ruth 4:9
"And Boaz said unto the elders, and unto all the people, Ye are witnesses this day, that I have bought all that was Elimelech's, and all that was Chilion's and Mahlon's, of the hand of Naomi."This declaration by Boaz before the court of the fathers in the gate of the city constituted the legal transfer to Boaz of the right of redemption just renounced by the near kinsman. This verse is not all of the legal procedure, for it also included Ruth 4:10. read more
E.W. Bullinger's Companion Bible Notes - Ruth 4:10
from the gate = from the people of his city, "gate" being put by Figure of speech Synecdoche (of Part) for the people wont to assemble there. App-6 . read more