Fasting (sawm) is an act of worship and obedience to Allah. The Qur’an gives its central purpose plainly: fasting is prescribed so that believers may grow in taqwa—mindfulness and reverence of Allah.
يَا أَيُّهَا الَّذِينَ آمَنُوا كُتِبَ عَلَيْكُمُ الصِّيَامُ كَمَا كُتِبَ عَلَى الَّذِينَ مِنْ قَبْلِكُمْ لَعَلَّكُمْ تَتَّقُونَ
“O believers! Fasting is prescribed for you—as it was for those before you—so perhaps you will become mindful of Allah.” (Qur’an 2:183)
What fasting is meant to cultivate
- Taqwa: greater awareness of Allah and greater care in obeying Him.
- Self-restraint: fasting is not only leaving food and drink; the Sunnah also emphasises guarding conduct and speech.
- Sincerity: much of the fast is known only to Allah and the person fasting.
- Gratitude and empathy: hunger and restraint can deepen appreciation for blessings and concern for people in need.
- Consistency in worship: Ramadan combines fasting with prayer, Qur’an, charity, repentance and remembrance.
Source focus: This guide centres the purposes of fasting established in the Qur’an and authentic Sunnah—taqwa, worship, self-restraint and sincerity—rather than presenting broad health claims as religious promises.
Fasting as a shield
The Prophet ﷺ described fasting as a shield and instructed the fasting person to avoid obscene or quarrelsome behaviour. Ramadan fasting performed with faith and hope for Allah’s reward is also linked in authentic hadith to forgiveness.