This refers to Muhammad. The meaning of {in which the Quran was revealed} refers to his Manifestation and the showing that he appeared from Abd Allah. This is the Day of Fitr (the breaking of the fast), and his making permissible all that Abd Allah had forbidden within it.

I say: Allah (the Exalted) informed us of the month of Ramadan and commanded us to fast it in Surah Al-Baqarah by His saying: {O you who have believed, decreed upon you is fasting as it was decreed upon those before you that you may become righteous. [For] a limited number of days...} (Al-Baqarah 183-187).

[The page then quotes the full sequence of verses 183 to 187, covering the rules of illness, travel, the ransom, the month of Ramadan, the closeness of Allah to those who supplicate, and the rules of intimacy during the nights of fasting. How excellent is the investigative scholar Jalal al-Din bin Mi'mar al-Sufi, who provided for us in his book titled (Taqwim al-Asma' [The Calibration of Names]) an explanation of the meanings of Fasting and the Month whose fasting is mandated in His Mighty Book, through this aforementioned noble verse, in this table as you see: