mārgāyāvara-janmanām

saunakah-Saunaka; uvaca-said; mahim-the earth; pratistham-situated; adhyasya-having secured; saute-O Suta Gosvami; svayambhuvah-Svayambhuva; manuh-Manu; kani-what; anvatisthat-performed; dvarani-ways; margaya-to get out; avara-later; janmanam-of those to be born.