1. Mistake of Spitting Saliva when Fasting;
Shaikh Abdul-Muhsin al-‘Abbad hafidhuhallah said:
“However, a person swallowing his own saliva, then there is no harm in this. This is necessary. Some people spit during the duration of their fasting and this is not correct. However, the intent is the saliva of other than himself…”
[Sharh Sunan Abi Dawood no. 275]
2. Ruling on Using Nicotine Patch for Smokers
Shaikh Ibn ul-‘Uthaymeen rahimahullah was asked:
Surrounding the subject of smoking, some pharmacies sell medical patches that are placed on the body to give the body what it needs of Nicotine for twenty four hours as steps to stop smoking. The question: if it is placed in the night for twenty four hours, then another placed, does a person break his fast in Ramadan when using it?
No, he does not break his fast during Ramadan and he can use it. Rather it is an obligation for him to use it if it is a way to stop smoking. There is no harm for a person to leave of something unlawful, step by step because Allah did not prohibit alcohol altogether in one time. Rather he made that prohibition in stages. So first He made it lawful, then He clarified its harms, then He prohibited it in some times over others then He prohibited it in general…”
[Jalasaat Ramadaaniyyah year 1415 H no. 1]
3. The Ruling on Using Mouth Spray
You find some people, specifically employees, that when they want to leave the house, (they) use very strong fragrances. They use a mouth spray to improve breath after (a) long sleep after fajr. So what is the ruling on that, may Allah facillate for you good?
Then there is no harm in a fasting person using a good scent, whether that be on his head, beard, or clothing. As for using mouth sprays, then there is no harm in this also if it does not reach the stomach. As for if it reaches the stomach, then it is not a must to use it, for that will expose him to breaking his fast. If the spray does not pass the mouth, then there is no harm in using it to freshen his mouth or use it to make breathing easy for him as some people are afflicted with asthma and the likes. I love that the one who uses this spray to freshen his mouth return to the doctors because I heard that the result of using a freshener in the mouth is vapor and a foul smell in the mouth. So it is necessary not to use that when fasting or other than it until he asks the doctors. And Allah is the one who facilitates”
[Noor ‘ala Darab no. 74]