Hamapil (הַמַּפִּיל in Hebrew)is a blessing prescribed in the Talmud to be recited before bed. It is a prayer for a restful sleep and a favorable waking up. Chabad custom is to recite it after the bedtime Shema, immediately before going to bed, and to not eat, drink, or speak after reciting it.

Following is the text of the blessing:

Text of the Blessing in Hebrew and English:

Blessed are You, Lord our God, King of the universe, Who causes the bonds of sleep to fall upon my eyes and slumber upon my eyelids, and Who gives light to the apple of the eye.

בָּרוּךְ אַתָּה יְיָ אֱלֺהֵֽינוּ מֶֽלֶךְ הָעוֹלָם הַמַּפִּיל חֶבְלֵי שֵׁנָה עַל עֵינָי וּתְנוּמָה עַל עַפְעַפָּי וּמֵאִיר לְאִישׁוֹן בַּת עָיִן:

May it be Your will, Lord my God and God of my fathers, to let me lie down in peace and to raise me up to a good life, and peace. Let my thoughts not trouble me, nor bad dreams, nor sinful fancies, and may my bed be perfect before You. Give light to my eyes, lest I sleep the sleep of death.

וִיהִי רָצוֹן מִלְּפָנֶֽיךָ יְיָ אֱלֹהַי וֵאלֹהֵי אֲבוֹתַי שֶׁתַּשְׁכִּיבֵֽנִי לְשָׁלוֹם וְתַעֲמִידֵֽנִי לְחַיִים טוֹבִים וּלְשָׁלוֹם וְאַל יְבַהֲלֽוּנִי רַעְיוֹנַי וַחֲלוֹמוֹת רָעִים וְהִרְהוֹרִים רָעִים וּתְהֵא מִטָּתִי שְׁלֵמָה לְפָנֶֽיךָ, וְהָאֵר עֵינַי פֶּן אִישַׁן הַמָּֽוֶת:

Blessed are You, Lord, Who in His glory gives light to the whole world.

בָּרוּךְ אַתָּה יְיָ הַמֵּאִיר לָעוֹלָם כֻּלּוֹ בִּכְבוֹדוֹ:

Transliteration:

Bah-rookh ah-tah ah-doh-nai eh-loh-hay-noo meh-lekh hah-oh-lahm hah-mah-peel khev-lay shay-nah ahl ay-nai oot-noo-mah ahl ah-fah-pai oo-may-eer lee-shohn baht ah-yeen.

Vee-hee rah-tzohn meel-fah-neh-khah ah-doh-nai eh-loh-hai vay-loh-hay ah-voh-tai sheh-tah-shkee-vay-nee li-shah-lohm vi-tah-ah-mee-day-nee li-khah-yeem toh-veem ool-shah-lohm vi-ahl yi-vah-hah-loo-nee rah-yoh-nai vah-khah-loh-moht rah-eem vi-heer-hoo-reem rah-eem oo-te-hay mee-tah-tee shlay-mah li-fah-neh-khah vi-hah-ayr ay-nai pen ee-shahn hah-mah-veht.

Bah-rookh ah-tah ah-doh-nai hah-may-eer lah-oh-lahm khoo-loh beekh-voh-doh.