autkaṇṭhyonmathitāśayaḥ

prattam-who was given; duhitaram-daughter; samrat-the Emperor (Manu); sadrksaya-unto a suitable person; gata-vyathah-relieved of his responsibility; upaguhya-embracing; ca-and; bahubhyam-with his two arms; autkanthya-unmathita-asayah-having an anxious and agitated mind.