In that vulgarity and foul speech are forbidden, there are many well-known sound [sahih] hadiths regarding this. The meaning here is expressing affairs taken as distasteful using frank terms, even if they are correct and the one saying them is being candid. This frequently concerns expressions used for sexual intercourse and the like. In these cases allusions should be used and they should be expressed in agreeable terms by which the intent is understood. The Noble Qur’an and the sound and venerable sunnah demonstrate this; Allah Most High said { It is lawful for you to do things [rafth] with your women on the night of fasting } [Al-baqara 187]; and Allah Most High said { And how can you take it when you have come unto each other } [Al-nisaa 21]; and the Most High said { And if you divorce them before you have touched them } [Al-baqara 237]. Verses and sound hadith showing this are numerous.
The scholars have said: With this and similar terms that are shameful to mention outright, an understandable allusion should be used. Thus sex with women is alluded to as “coming unto” [ifdaa], “entering” [dukhul], “intimacy” [mu’ashara], “falling upon” [wiqa’ ] and the like, and is not declared as “fucking” [naik], “sex” [jima’ ] and the like. In the same way, urination and defecation are alluded to as “fulfilling the need” and “going to the latrine” and not announced as “dropping a load” [khiraa], urinating, or the like.