brdeg par brtsams pa

brdol bon [from king gnya' khri btsan po rgyal rabs drug pa in the time of khri sde btsan po a kind of B"n spreading in Tibet sngon gyi bshad srol du sngar gdug 'dres byis pa zhig yul khams gzhan du khrid de nus pa bslabs nas mngon shes thob pa dang, phyis kyi deb ther khag gi nang du chab srid bon gyis bskyangs zhes gsal ba'i bon po de nas byung] [IW]