बुध (Budh) पूजा -

For Budh (Mercury) planet pacification, you should perform 36,000 chants of the Budh Beej Mantra, "Om Braam Breem Broum Sah Budhay Namah," ideally in a quiet, sacred space using a mala.
This can be done in one sitting or spread over several days, and is often completed in a special Vedic ritual called a Budh Shanti Yagya, which can also be performed by learned priests.

Budh Beej (Seed) Mantra -
Om Braam Breem Broum Sah Budhaya Namah।।
(ॐ ब्रां ब्रीं ब्रौं सः बुधाय नमः।।)

Budh Gayatri Mantra -
Om Saumyarupaya Vidhmahe Vaaneshaya Dhimahi Tanno Saumyah Prachodayat।।
(ॐ सौम्य-रूपाय विद्महे वाणेशाय धीमहि तन्नो सौम्यः प्रचोदयात्।।)