Things that do not invalidate fast.

Answered according to Hanafi Fiqh by Darulifta-Deoband.com
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What are the things that invalidates the fast, and also numerate the things that makrooh fasting? Please enumerate the points separately and give a complete list for future reference.

بسم الله الرحمن الرحيم

(Fatwa: 1005/1005/M=10/1436)

Fast breaks by eating or drinking or having intercourse in the state of fast knowingly. In case it is done unknowingly then fast does not break. Fast also breaks by administering drops in the ears. Fast also breaks by inhaler or taking vapour inside. Masturbation also breaks the fast. If a woman experiences menses during fast then it also shall break the fast. It is makrooh to use toothpowder, gul and toothpaste. However, there is no harm in applying scent, oil or kohl.

Allah knows Best!

Darul Ifta,
Darul Uloom Deoband

This answer was collected from the official ifta website of Darul Uloom Deoband in India.