Anas Ibn Malik (رَضِيَ ٱللَّٰهُ عَنْهُ) narrated that, "Whenever the Messenger of Allah entered the toilet, he would say: 'A'udhu Billahi minal-khubthi wa'l-khaba'ith (I seek refuge with Allah from male and female devils)." – Sunan Ibn Majah 298.
The source for the dua before entering the toilet, recommended to be recited before entering the toilet, has been cited by Al-Bukhari 1:45 and Muslim 1:283. So, the dua can be cited as reliable and authentic. It is also Sunnah to recite this dua before one steps inside the toilet to avoid harm from Shayateen.
One must remember that the believers have been instructed not to linger in the toilet for too long and to leave immediately once all activities are finished. The etiquette taught by Islam is to step inside the toilet by putting your left foot first and exit the toilet by putting your right foot outside first. Other Islamic etiquette also instructs to practice silence when inside the toilets and avoid unnecessary speaking. These guidelines protect us from Shaytan and Jinns, who are known to reside in unclean places (such as toilets).
Home & Family Duas
Bismillaahi. Allaahumma 'innee 'a'oothu bika minal-khubthi walkhabaa'ith.
In the Name of Allah. O Allah, I seek protection in You from the male and female unclean spirits.
Before you enter the toilet, recite the dua above and enter the toilet using your left foot first. You must recite this dua whether you're entering the toilet to relieve yourself or for some other purpose, such as taking a bath or brushing your teeth, as evil spirits seek refuge in impure places where awrahs are uncovered.
There are several benefits to reciting this Dua that are as follows:
Many people wish to recite Bismillah before they make their wadhu. However, it's not uncommon to wonder whether it is appropriate to recite a dua once you're inside the toilet. However, scholars are of the opinion that it is makruh (disliked) to mention the name of Allah in the toilet. Others seem it appropriate to recite it in one's heart without uttering it out loud.
Muslims are recommended to enter the toilet by putting their left foot inside the toilet first and leave by putting their right foot outside first. Moreover, avoid speaking or talking unnecessarily in the washroom, and make sure to recite the above-mentioned dua before you enter for protection of your awrah from evil Jinns.