Kabbalah zu Schir haSchirim 3:1

"And Ad-nai said to Moshe: a woman that gives seed and births a male etc" - Rabbi Eleazar began with this verse: 'on my bed, at night, I searched [for the one my soul desires, I searched but haven't found him]' (Songs 3:1). The text should read 'in my bed', what is 'on my bed'? The congregation of Israel asked the Holy One of Blessing regarding the exile since she sits among the peoples with her children, and lies down in the dust, and because she lies on the ground she has become unfit to offer sacrifices, she said 'on my bed I consider that I feel sick in exile, and regarding this 'I asked [for] the One that my soul loves' and I will not restrain myself from Him.