Хасидус к Кохелет 11:2

In the midrash “human and beast…” (Psalms 36:7), “and when he is eight days old he should be circumcised” (Genesis 17:12), that he should see the face of the matron first (Vayikra Rabbah 27:10). Because it is written, “give a portion to seven and also to eight” (Ecclesiastes 11:2). “To seven” – seven days of creation. “To eight” – eight days until circumcision (Kohelet Rabbah 11:2). The explanation is that circumcision is the aspect of eight which is above nature. And we can come to this through the aspect of the Sabbath, to bring the sanctity of the holy Sabbath also into the days of the week. And this is giving a portion to seven, because the Sabbath is a taste of the World to Come. And through them we are able to also come to the aspect of eight.