bhrātṛ-putrān asāntvayat

hiranyakasipuh-Hiranyakasipu; bhratuh-of the brother; samparetasya-deceased; duhkhitah-being very much distressed; krtva-performing; katodaka-adini-ceremonies observed after a death; bhratr-putran-the sons of his brother; asantvayat-pacified.