אִם־זְכַרְתִּ֥יךָ עַל־יְצוּעָ֑י בְּ֝אַשְׁמֻר֗וֹת אֶהְגֶּה־בָּֽךְ׃
내가 나의 침상에서 주를 기억하며 밤중에 주를 묵상할 때에 하오리니
Rashi
יצועי denotes a couch, because it is spread (root יצע) with mattresses and sheets; it occurs in this sense frequently in Scripture: (Psalms 132:3) “Nor go up into the bed that is spread for me (ערש יצועי)” ; (Psalms 63:7) “When I remember thee upon my (יצועי) couch”.