One of the pillars of fasting is the intention. As for the intention of Ramadan fasting is done at night, usually after tarawih prayers finished, but certainly fasting in Ramadan intention must before dawn or before entering the dawn of time and / or before the Ruling.
Fasting Ramadan is fasting obligatory for every Muslim, whether male or female that has baligh and sensible. Ramadan fasting obligation command has been immortalized in the Qur'an Surah Al-Baqarah verse 183 which means "O ye who believe are required for all of you to fast, as it was prescribed to those before you, that ye fear Him".
related:
sample collection Ramadan prayers
Ramadan prayer in Arabic
Iftar prayer
Daily prayer of Ramadan
prayer to welcome the month of Ramadan
replace fasting prayer intentions
Ramadan fasting month of prayer intentions
the intention of fasting obligatory
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