8:7ח׳:ז׳
1 א

יצוא ושוב. הוֹלֵךְ וּמַקִּיף סְבִיבוֹת הַתֵּבָה, וְלֹא הָלַךְ בִּשְׁלִיחוּתוֹ, שֶׁהָיָה חוֹשְׁדוֹ עַל בַּת זוּגוֹ, כְּמוֹ שֶׁשָּׁנִינוּ בְּאַגָּדַת חֵלֶק (סנה' ק"ח):

יצא ושוב WENT FORTH TO AND FRO — It (the raven) flew in circles round and round the Ark and did not go on its errand for it suspected that he (Noah) intended to injure its mate, just as we learn in the Agada of Chelek (Sanhedrin 108b).

2 ב

עד יבשת המים. פְּשׁוּטוֹ כְּמַשְׁמָעוֹ. אֲבָל מִדְרַשׁ אַגָּדָה מוּכָן הָיָה הָעוֹרֵב לִשְׁלִיחוּת אַחֶרֶת בַּעֲצִירַת גְּשָׁמִים בִּימֵי אֵלִיָּהוּ, שֶׁנֶּאֱמַר וְהָעֹרְבִים מְבִאִים לוֹ לֶחֶם וּבָשָׂר (מ"א י"ז):

עד יבשת המים UNTIL THE WATERS WERE DRIED UP—The real sense of the verse is what it plainly implies (until the waters of the Flood were dried up); but the Midrashic explanation (Genesis Rabbah 33:5) is: The raven went to and fro in the world being kept in readiness for another errand during the time when the rain was withheld and the waters dried up in the days of Elijah, as it is said, (1 Kings 17:6) “And the ravens brought him bread and flesh”.