Sale
late Old English sala, from Old Norse sala, of Germanic origin; related to sell.
wiktionary
From Middle English sale, sal, from Old English sæl(“room, hall, castle”), from Proto-Germanic *salą(“house, hall”), from Proto-Indo-European *sel-(“home, dwelling, village”). Cognate with West Frisian seal, Dutch zaal, German Saal, Swedish sal, Icelandic salur, Lithuanian sala(“village”). Related also to salon, saloon.
From Middle English sale, from Old English sala(“act of selling, sale”), from Old Norse sala(“sale”), from Proto-Germanic *salō(“delivery”), from Proto-Indo-European *selh₁-(“to grab”).
etymonline
sale (n.)
late Old English sala "a sale, act of selling," from a Scandinavian source such as Old Norse sala "sale," from Proto-Germanic *salo (source also of Old High German sala, Swedish salu, Danish salg), from PIE root *sal- (3) "to grasp, take." Sense of "a selling of shop goods at lower prices than usual" first appeared 1866. Sales tax attested by 1886. Sales associate by 1946. Sales representative is from 1910.
