מאי חנוכה דתנו רבנן בכ"ה בכסליו יומי דחנוכה תמניא אינון דלא למספד בהון ודלא להתענות בהון שכשנכנסו יוונים להיכל טמאו כל השמנים שבהיכל וכשגברה מלכות בית חשמונאי ונצחום בדקו ולא מצאו אלא פך אחד של שמן שהיה מונח בחותמו של כהן גדול ולא היה בו אלא להדליק יום אחד נעשה בו נס והדליקו ממנו שמונה ימים לשנה אחרת קבעום ועשאום ימים טובים בהלל והודאה
What is Chanukkah? ... That [which] our Sages taught: On the 25th of Kislev - the days of Chanukkah, they are eight, not to eulogize on them and not to fast on them, for when the Greeks entered the Temple, they polluted all the oils in the Temple, and when the Hasmonean dynasty overcame and defeated them, they checked and they found but one cruse of oil that was set in place with the seal of the High Priest, but there was in only [enough] to light a single day. A miracle was done with it, and they lit from it for eight days. The following year [the Sages] fix those [days], making them holidays for praise and thanksgiving.
he Scroll of Antiochus concludes with the following words:
“...After this, the sons of Israel went up to the Temple and rebuilt its gates and purified the Temple from the dead bodies and from the defilement. And they sought after pure olive oil to light the lamps therewith, but could not find any, except one bowl that was sealed with the signet ring of the High Priest from the days of Samuel the prophet and they knew that it was pure. There was in it [enough oil] to light [the lamps therewith] for one day, but the God of heaven whose name dwells there put therein his blessing and they were able to light from it eight days. Therefore, the sons of Ḥashmonai made this covenant and took upon themselves a solemn vow, they and the sons of Israel, all of them, to publish amongst the sons of Israel, [to the end] that they might observe these eight days of joy and honour, as the days of the feasts written in [the book of] the Law; [even] to light in them so as to make known to those who come after them that their God wrought for them salvation from heaven. In them, it is not permitted to mourn, neither to decree a fast [on those days], and anyone who has a vow to perform, let him perform it
And [we thank You] for the miracles, for the redemption, for the mighty deeds, for the saving acts, and for the wonders which You have wrought for our ancestors in those days, at this time—
In the days of Matityahu, the son of Yochanan the High Priest, the Hasmonean and his sons, when the wicked Hellenic government rose up against Your people Israel to make them forget Your Torah and violate the decrees of Your will. But You, in Your abounding mercies, stood by them in the time of their distress. You waged their battles, defended their rights, and avenged the wrong done to them. You delivered the mighty into the hands of the weak, the many into the hands of the few, the impure into the hands of the pure, the wicked into the hands of the righteous, and the wanton sinners into the hands of those who occupy themselves with Your Torah. You made a great and holy name for Yourself in Your world, and effected a great deliverance and redemption for Your people Israel to this very day. Then Your children entered the shrine of Your House, cleansed Your Temple, purified Your Sanctuary, kindled lights in Your holy courtyards, and instituted these eight days of Chanukah to give thanks and praise to Your great Name.