Invalidators of Fasting – What Breaks a Fast in Islam?

What Breaks a Fast in Islam Invalidators Guide

Fasting in Ramadan is a sacred act of worship that is obligatory upon every adult Muslim who meets the required conditions. During this blessed month, millions of Muslims around the world observe the fast and engage in prayer, charity, Quran recitation, and other acts of devotion to attain Allah’s mercy and forgiveness. Despite its spiritual significance, many people feel uncertain about certain actions while fasting and wonder whether their fast remains valid or has been broken. These doubts often arise due to a lack of proper guidance and a clear understanding of Islamic teachings.

In this article, we will clearly explain what breaks a fast in Islam, outlining the major invalidators of fasting and addressing common modern-day issues that raise questions about the validity of one’s fast.

Things that Break the Fast

Understanding what breaks a fast in Islam is essential to ensure that our worship remains valid and accepted by Allah. Below are the primary invalidators agreed upon by classical scholars, based on clear evidence from the Quran and authentic Hadith.

1. Eating or Drinking Intentionally During Fasting Hours

This is one of the most obvious invalidators of the fast. Any intentional consumption of food or drink during the fasting hours — no matter how small the amount — breaks the fast.

Allah says:

“Eat and drink until the white thread of dawn becomes clear from the black thread of night. Then complete the fast until sunset.”
(Surah Al-Baqarah 2:187)

This verse clearly establishes that eating and drinking are permitted only until dawn, and must be avoided until sunset. Therefore, if someone deliberately eats or drinks during the fasting hours, the fast becomes invalid.

However, if a person eats or drinks forgetfully, the fast remains valid and is not broken. The Prophet ﷺ said:

“Whoever forgets while fasting and eats or drinks, let him complete his fast, for it was Allah who fed him and gave him drink.”
(Sahih al-Bukhari and Sahih Muslim)

2. Sexual Intercourse During Fasting Hours

Engaging in sexual intercourse during the fasting hours is one of the most serious acts that completely invalidates the fast. A fasting person is not permitted to have marital relations with his or her spouse from dawn until sunset.

Allah says:

“It has been made permissible for you the night preceding fasting to go to your wives…”
(Surah Al-Baqarah 2:187)

This verse clearly indicates that marital relations are allowed during the night but prohibited during the fasting hours of the day.

Expiation (Kaffarah

If a person intentionally engages in sexual intercourse during the fasting hours of Ramadan, the fast is invalidated, and kaffarah (major expiation) becomes obligatory.

i.e:

  • Free a slave (if able).
  • If unable, fast for two consecutive months.
  • If unable to do that, feed sixty poor people.

This ruling is established in an authentic Hadith reported in Sahih al-Bukhari (Hadith 1937).

3. Intentional Ejaculation

Scholars agree that deliberate sexual stimulation resulting in ejaculation invalidates the fast. This includes intentional acts such as masturbation or physical stimulation carried out knowingly during the fasting hours.

However, ejaculation that occurs involuntarily during a wet dream while asleep does not break the fast because the person has no control over it.

4. Intentional Vomiting

Vomiting is another action where intention determines whether the fast is broken.

The Prophet ﷺ said:

“Whoever vomits unintentionally does not have to make up the fast, but whoever vomits deliberately must make it up.”
(Sunan Abu Dawood 2380)

This means that uncontrolled or accidental vomiting does not invalidate the fast, as the person has no control over it. However, induced or deliberate vomiting, for example, forcing oneself to vomit intentionally, breaks the fast and requires making up (qada’) the day.

5. Menstruation and Postnatal Bleeding

If a woman begins menstruating during the fasting hours of Ramadan, her fast becomes invalid. She is not required to continue fasting that day and must make up the missed fasts after Ramadan. This ruling is established in authentic Hadith, where women are instructed to make up the missed fasts but not the prayers missed during menstruation. 

6. Smoking and Vaping

Smoking or vaping during fasting hours breaks the fast, as it involves the intentional introduction of substances into the body. This includes cigarettes, shisha, e-cigarettes, or any other form of smoking.

7. Use of Inhalers

Similarly, the use of inhalers or medications administered through the mouth or nose that provide nutrition can also invalidate the fast if taken deliberately during fasting hours. However, scholars note that if the use of an inhaler or medication is necessary for health and cannot be postponed, the ruling may differ. Therefore, those who rely on inhalers or other similar substances should consult a qualified scholar regarding necessity and timing during Ramadan.

8. Injections

Most contemporary scholars make a distinction between different types of injections:

  • Nutritional injections, which provide sustenance, are considered to break the fast.
  • Non-nutritional medical injections, such as vaccines or medications that do not provide nourishment, generally do not break the fast.

Actions That Do Not Break the Fast

These actions are permissible during fasting and do not invalidate the fast.

  • Forgetfully eating or drinking
  • Unintentional vomiting
  • Swallowing saliva
  • Swallowing phlegm (unless it reaches the mouth and is deliberately swallowed)
  • Blood tests
  • Non-nutritive injections (e.g., vaccines or medications)
  • Brushing teeth with toothpaste or using Miswak (without swallowing the paste)
  • Wet dreams
  • Tasting food without swallowing

FAQs

1. Does vomiting break the fast in Islam?

Only intentional vomiting breaks the fast; unintentional vomiting does not.

2. Does accidentally eating break the fast?

No. According to authentic Hadith in Sahih Bukhari and Muslim, accidental eating does not break the fast.

3. Do injections break the fast?

Scholars differ. Nutritional injections generally invalidate; non-nutritional ones usually do not.

4. Does brushing teeth break fasting?

No, unless toothpaste or water is swallowed intentionally.

5. Do sins break the fast?

Sins do not invalidate the fast, but they reduce the reward significantly.

6. Does bleeding break the fast in Islam?

Menstruation or postnatal bleeding breaks the fast; normal bleeding does not.

7. Does smoking break the fast in Islam?

Yes, smoking breaks the fast.