[Arab. bi-sm-illah(i in the name of God.] In the name of Allah or God; a common Mohammedan exclamation.
 
1813.  Byron, Giaour, 568. They reach the grove of pine at last: Bismillah! now the perils past.
 
1850.  Thackeray, Pendennis, liii. He 
 is all for the sack practice, Bismillah!