Surah Al-Baqarah 2:185

ﲇ ﲈ ﲉ ﲊ ﲋ ﲌ ﲍ ﲎ ﲏ ﲐ ﲑ ﲒ ﲓ ﲔ ﲕ ﲖ ﲗ ﲘ ﲙ ﲚ ﲛ ﲜ ﲝ ﲞ ﲟ ﲠ ﲡ ﲢ ﲣ ﲤ ﲥ ﲦ ﲧ ﲨ ﲩ ﲪ ﲫ ﲬ ﲭ ﲮ ﲯ ﲰ ﲱ ﲲ ﲳ ﲴ ﲵ

The month of Ramadhan [is that] in which was revealed the Qur'an, a guidance for the people and clear proofs of guidance and criterion. So whoever sights [the new moon of] the month, let him fast it; and whoever is ill or on a journey - then an equal number of other days. Allah intends for you ease and does not intend for you hardship and [wants] for you to complete the period and to glorify Allah for that [to] which He has guided you; and perhaps you will be grateful.