Abu Huraira reported Allah's Messenger ﷺ as saying, “Men are of different origins just as gold and silver are; the best among them in the pre-Islamic period are the best among them in Islam when they are versed in the religion.” Muslim transmitted it.

Anas told of a man coming to the Prophet (ﷺ) and saying, “I have a complaint in my eyes, so may I apply collyrium while I am fasting?” He replied, “Yes.” Tirmidhi transmitted it, saying its isnad is not strong and Abu ‘Atika the transmitter is declared to be weak.

One of the Prophet’s companions said he had seen the Prophet (ﷺ) in al-'Arj* pouring water over his head while he was fasting; either because of thirst or because of the heat. *A wadi in the neighbourhood of at-Ta’if. Malik and Abu Dawud transmitted it.

Shaddad b. Aus said that when Allah's Messenger ﷺ was walking hand in hand with him on the eighteenth of Ramadan he came across a man in al-Baqi who was being cupped and said, “The one who cups and the one who is cupped have broken their fast.” Abu Dawud, Ibn Majah and Darimi transmitted it. The shaikh and imam Muhyi as-sunna said that some of those who allow cupping have interpreted it as meaning that they exposed themselves to the danger of breaking the fast, the one who was cupped on account of weakness, and the one who did the cupping because he could not guarantee that something would not get into his stomach by sucking the flask.

Abu Huraira reported Allah's Messenger ﷺ as saying, “If anyone breaks his fast one day in Ramadan without a concession* or without being ill, a perpetual fast will not atone for it even if he observes it.” *e.g. while travelling. Ahmad, Tirmidhi, Abu Dawud, Ibn Majah, Darimi and Bukhari in a chapter heading transmitted it. Tirmidhi said that he heard Muhammad, i.e. Bukhari, say this was the only tradition he knew by Abul Mutawwis the transmitter.

He reported Allah's Messenger ﷺ as saying, “Many a one who fasts gets nothing from his fasting but thirst, and many a one who prays during the night gets nothing from his night prayers but wakefulness.” Darimi transmitted it. The tradition of Laqit b. Sabira has been mentioned in the chapter on how to perform ablution. [in another part of the Mishkat]

Abu Sa'id al-Khudri reported Allah's Messenger ﷺ as saying, “Three things do not break the fast of one who is fasting

Thabit al-Bunani said that when Anas b. Malik was asked whether they disapproved of cupping for one who was fasting in the time of Allah's Messenger ﷺ he replied, “No, except if it had a weakening effect.” Bukhari transmitted it.

Bukhari said without a complete isnad that Ibn ‘Umar used to have himself cupped whan he was fasting. Then he abandoned it and had himself cupped at night.

‘Ata’ said, “If one rinses his mouth and ejects the water in it, swallowing his saliva and anything that remains in it does him no harm; but one should not chew gum, for although I do not say that he breaks his fast [if] he swallows the saliva produced by the gum, he is nevertheless prohibited from doing it.” Bukhari transmitted it in a chapter heading.

‘A'isha said that Hamza b. ‘Amr al-Aslami who was greatly devoted to fasting asked the Prophet (ﷺ) whether he should fast when on a journey, and received the reply, “Fast if you like, or break your fast if you like.” (Bukhari and Muslim.)