Every supreme deity has the power to generate, operation and destroy. So,

they are called as the gods and goddess. To communicate with them magic texts act as a bridge between sadhaka and the deity They are thousands of mantras for every deity. Up on all of them, Beej mantras are the root mantras of that sadhaka deity means the total power or energy of the deity is present in the single word. By, chanting the single word, the sadhaka can gain the power of the deity and use as per his/her need
Beej mantra of the Lord Bhairav is “Bham” or “Brahm”. The practitioner should keep “Om” before and after the Beej mantra to get success, and the practitioner should chant as “Om Bham Om” or “Om Brahm Om” They are nearly 1008 forms in Bhairav like Kala Bhairav, batuka, Ashtanga, Ruru Bhairav, etc. all forms have their individual invocation and evocation mantras but the powers of all Bhairav forms are mixed in single beej mantra called “Bham” or “Brahm” So, the sadhaka could chant any one Beej mantra to gain the powers of the Bhairav and use to fulfill the desires.
The perfect count to get desire results is 1 lakh (1, 00,000).
By chanting 5000 times daily, the sadhaka can complete the count successfully in 21 days. To complete the 5000 times, the sadhaka can take 45 to 50 minutes. So, by sparing 1 hour daily for 21 days the sadhaka can achieve success in magic and as well as in the life.
If the sadhaka face difficulty to sit 1 hour, he/she can divide as 2,500 + 2,500 for morning and evening
Mantra

“Om Bham Om”
Or
“Om Brahm Om”

Start sadhaka the mantra from Amavasya or Sunday.
The sadhaka would dream dogs in the dream, it indicates the success in the Bhairav sadhana. The female sadhaka are suggesting to avoid the practice for 3 days at the time of menses