The verse quoted is Bereshis 37:29-30: the requested word is
וַיָּ֤שׇׁב
with kamatz under ש. The kamatz does not have stress, and is known as kamatz katankamatz katan, or a short vershion of kholam in the Babylonian pronunciation adopted by sephardim. It's "o" as indog/fog for Brittish and or, oil, own/oil/own for American speakers.