Bismillah

Finally, the boy told the king that he would succeed only if he gathered all his citizens as witnesses, declared bismillah rab al-gholam—“in the name of Allah, the God of this boy”—and fired an arrow.

‘Bismillah!’ he exclaimed. ‘I call all here to witness that Rashîd, the son of Ali, called the Fair, is free henceforth to go what way he chooses.’

Thus recitation of Bismillah creates a sort of firm conviction in the existence of Allah, and also develops the sense of gratitude, in the mind of the servant of Allah, for all that Allah has provided for him.

On the night before his execution he calls God in Arabic - "Bismillah" - and so regains his soul from Satan.

In Bismillah, Allah has chosen to mention only two of His attributes, Rahman and Rahim, out of all His numerous attributes and the verse does not mention any other Divine attribute;...

It was only at the age of six years when Bismillah was sent to Varanasi to stay with his maternal uncle, Ali Baksh, who himself was a great musician and played shehnai in the premises of the Kashi Vishwanath Temple.