VR 705:7(1) :מה דאזל אזל מן הכא ולהלא נחל חושבנא‏ : what happened, happened; from here on let us clean the account
See the entire entry for ˀzl vb. to go

VR 705:7(1) :מן הכא ולהלא נחל חושבנא‏ : from here on we will begin(! Heb.) an account
See the entire entry for lhal adv. far off, further on