When Bismillah Was Revealed
Sayyidina Jaabir (RA) is reported to have said that when Bismillaahir rahmaanir raheem revealed, the clouds gave way by moving to the East, the winds ceased blowing, the oceans became calm, the creatures prepared themselves to listen, the Shaytaan got pelted with fire from the heavens and Allah Ta’ala, swearing an oath by His honor, declared: Anyone who says this name of mine (ie. Bismillaahir rahmaanir raheem) upon anything, I will surely impart barakah in that thing, (Durre Manthoor and Ibne Katheer)

Bismillah Before Wahee
In Durre Manthoor Sayyidina Ibne Umar (RA) is reported as saying that surely, whenever Jibreel (AS) used to bring Wahee to Rasoolullah (Sallallaahu-alayhi-wasallam), he used to first recite Bismillaahir rahmaanir raheem .
The reason for the above is as follows: in Bismillah there are three names of Allah:
(1) Allah which is His personal name indicating that all projects can only be initiated by the will and wish of Allah.
(2) Rahmaan (Kind) which is His attributive name indicating that only Allah can keep that project intact and existent (guarding it against destruction).
(3) Raheem(Most Merciful) which is also His attributive name indicating that only Allah can, through His mercy and grace, enable any person to derive benefit from that project.

This clearly proves that any project begun with Bismillaahir rahmaanir raheem will be granted barakah and blessings from the beginning till the end.

Bismillah Before Doing Anything
It is for this reason that Rasoolullah (Sallallaahu-alayhi- wasallam) used to recite Bismillaahir rahmaanir raheem before doing any work. And he (sallallaahu-alayhi-wasallam) also advised the Ummah to do the same. For example, reading it before shutting the door for the night, before putting out the light, before taking meals, before drinking water, before boarding a conveyance, and when alighting any conveyance.

Remembering Allah Through His Three Thousand Names
It is mentioned in Tafseer Roohul Bayaan that Allaamah Sayyid Haqqi (RA) said that Allah Ta’ala has three thousand names. He revealed one thousand to the angels, one thousand to the Ambiya(AS), three hundred are mentioned in the Toraah, three hundred in the Zaboor, three hundred in the Injeel, and ninety-nine in the Holy Qur’an. One Name He has kept to Himself; He revealed it to no one. Also, He has condensed all His names into the three names contained in Bismillaahir rahmaanir raheem. They are Allah, Rahmaan, and Raheem. Any person saying Bismillaahir rahmaanir raheem; it is as though he has remembered Allah by all His names.

Bismillah – A Means Of High Status In The Hereafter
Rasoolullah (Sallaahu-alayhi-wasallam) is reported as saying that any du’a which is begun with is not rejected. Because of saying Bismillaahir rahmaanir raheem the scales of my Ummah will become heavy on the Day of Qiyaamah. The other people will enquire: “Why are the virtues of the Ummate Muhammadiyyah so heavy?” Their prophets will say: “In the utterances of the Ummate Muhammadiyyah there is such an honourable name of Allah that if it is placed on the one side of the scale, and the sins of the entire creation is put onto the other side then the side with the virtue will be heavier.

Saying Bismillah Before Wudu
Rasoolullah (Sallailaahu-alayhi-wasallam) said: “One who does not say Bismillah before wudhu, his wudhu is incomplete.” (Tirmizi). It is reported from Sayyidina Abu Hurairah (RA) that anyone who does not say Bismillah before wudhu, only the sins committed by the limbs which are washed in wudhu will be washed away; and one who says Bismillah before wudhu, the sins of the entire body will be washed away. (Mishkaat)

Saying Bismillah Before Meals
Sayyidina Umar Ibne Abee Salmah (RA) reports that Rasoolullah (Sallallaahu-alayhi-wasallam) said to me: “Say Bismillah and eat with your right hand the food that is in front of you.” (Bukhari, Muslim, Tirmizi)

Whoever used to eat without saying Bismillah, Rasoolullah(Sallallaahu-alayhi-wasallam) used to hold his hand and urge him to say Bismillah. (Zaadul Ma’aad,Uswah-e-Rasoole Akram).

The Ulama have said that it is preferable to say the Bismillah aloud so that it is a reminder for those who forget. Also, Ibne Habbaan is reported as saying that if Bismillah is said prior to utilising any bounty of Allah and Alhamdu- lillah is said after utilising it, the user will not be asked to give account for that bounty on the Day of Qiyamah.

When Undressing
Sayyidina Anas (RA) reports from Rasoolullah (Sallallaa- hu-alayhi-wasallam) that when a person undresses for the purpose of either relieving himself or bathing or having relations with his spouse then the Shaytaan interferes and plays with his or her private parts. But if he or she says Bismillah before taking off the clothes, then this serves as a barrier and safety against the Shaytaan and jinn. (Tirmizi)

Other Wonders Of Bismillah
Rasoolullah (Sallallaahu-alayhi-wasallam) is reported as saying that as long as people keep on saying Bismillaahir rahmaanir raheem it will be a means of safeguarding them against sicknesses; a means of granting riches to the destitute; a means of freedom against the Fire; a means of safeguard against being swallowed by the earth; a means of safety against faces becoming distorted; and a means of safety from stones raining down from the heavens. (Ghunyatut Taalibeen Page 157)

(2) Ayyaz breaks the precious jewel
Sultan Mahmood had a servant whose name was Ayyaz. Ayyaz was well known for his good manners and wisdom. Once, Sultan Mahmood was holding a precious jewel in his hand while sitting with his ministers. He told one of the ministers to break the jewel. Since the jewel was very expensive, the minister refused to break it. Then the Sultan told another minister to break it. He also denied breaking the jewel. One by one all the ministers refused to break the precious jewel due to its great value. Now, Sultan Mahmood passed the jewel to Ayyaz and told him to break it. Ayyaz immediately took the stone to his hand and threw it hard on the floor. The jewel shattered into pieces. The Sultan asked Ayyaz why he broke the jewel while others denied doing so. Ayyaz said, “The jewel is valuable, but your order is more valuable.”

We should learn from this story that even if the things of this world are very precious and valuable, the orders of Allah are much more valuable. So, we should follow them.