Prabhav प्रभव Prabhavam प्रभवं BG 10:2

Prabhav प्रभव (both A pronounced as U in But): The operative cause, origin of being (as father, mother, &c.). Dictionary p365.

ॐ श्रीनारायण शरणम् ! Om Shri Naaraayan' Sharanam !
कायेन वाचा मनसेन्द्रिऐवा बुध्यात्मना वा प्रकृते स्वभावात । Kaayen' Vaachaa Man'sendriaiyaa Budhyaat'manaa vaa Prakrite Swabhaavaat'
करोमि यद् यद् सकलं परस्मै नारायणायेति समर्पयामि ।। Karomi Yad Yad Sakalam Parasmai Naaraayanaayeti Samarpayaami