עמוס ו:ד פירוש: רש״י

and stretch out on their beds Heb. וּסְרֻחִים. They spread themselves out and stretch themselves out on their beds. Our Sages, however, explained that they would exchange wives with one another and befoul their beds with semen that is not theirs. [from Shabbath 62b]

lambs Heb. כָּרִים Lambs.

out of the stall—The place where the calves are gathered, and in O.F. kopled, a pen.