BT Šab 60b(45) : השתא חמש שרי ארבע מיבעיא‏ : since "five" is already allowed, why is it necessary (to mention) "four"?
See the entire entry for bˁy vb. to ask, to beg, to inquire

BT Šab 60b(45) :השתא חמש שרי ארבע מיבעיא‏ : since "five" is already allowed, why is it necessary (to mention) "four"?
See the entire entry for ha$tā adv. now