▁the ▁Heb rew , ▁to ▁teach ▁that ▁ ▁required ▁a ▁person ▁to ▁return ▁a ▁neighbor ' s ▁animal ▁again ▁and ▁again , ▁even ▁if ▁the ▁animal ▁kept ▁running ▁away ▁four ▁or ▁five ▁times . ▁And ▁R ava ▁taught ▁that ▁ ▁required ▁a ▁person ▁to ▁return ▁the ▁animal ▁even ▁a ▁hundred ▁times . ▁If ▁one ▁found ▁an ▁ident ifiable ▁item ▁and ▁the ▁identity ▁of ▁the ▁owner ▁was ▁unknown , ▁the ▁M ish nah ▁taught ▁that ▁the ▁find er ▁was ▁required ▁to ▁announ ce ▁it . ▁Rab bi ▁Me ir ▁taught ▁that ▁the ▁find er ▁was ▁obliged ▁to ▁announ ce ▁it ▁until ▁his ▁neighb ors ▁could ▁know ▁of ▁it . ▁Rab bi ▁Jud ah ▁maintained ▁that ▁the ▁find er ▁had ▁to ▁announ ce ▁it ▁until ▁three ▁festiv als ▁had ▁passed ▁plus ▁an ▁additional ▁seven ▁days ▁after ▁the ▁last ▁festival , ▁allowing ▁three ▁days ▁for ▁going ▁home , ▁three ▁days ▁for ▁returning , ▁and ▁one ▁day ▁for ▁announ cing . ▁ ▁A ▁Bar ait a ▁c ited ▁among ▁aff irm ative ▁pre cept s ▁not ▁limited ▁to ▁time ▁those ▁regarding ▁returning ▁lost ▁property ▁in ▁ ▁the ▁dismiss al ▁of ▁the ▁mother ▁bird ▁in ▁ ▁and ▁the ▁building ▁of ▁f ences ▁around ▁accessible ▁roof s ▁in ▁▁ ▁R ava ▁taught ▁that ▁ ▁“ And ▁so ▁shall ▁you ▁do ▁with ▁every ▁lost ▁item ▁of ▁your ▁brother ,” ▁serves ▁to ▁include ▁an ▁oblig ation ▁to ▁protect ▁one ' s ▁brother ▁from ▁the ▁loss ▁of ▁his ▁land . ▁Rav ▁ Ḥ an anya ▁replied ▁that ▁a ▁Bar ait a ▁taught