'Ubaid Allah b. Abu Bakr b. Anas reported on the authority of Anas b. Malik that he used to apply collyrium when he was fasting.
The Prophet Muhammad ﷺ taught us through this hadith that we should be mindful of our actions and strive for moderation even when we are observing religious obligations such as fasting during Ramadan or any other time throughout the year. We should also remember that there may be exceptions to certain rules depending on individual circumstances and situations; therefore it is important for us to seek knowledge from reliable sources before making decisions about our own lives and those around us.