The sons of Kartaviryarjuna, being devoid of the qualities of ksatriyas, were so cruel that despite her prayers they forcibly cut off his head and took it away

Expressions researched:
"The sons of Kārtavīryārjuna, being devoid of the qualities of kṣatriyas, were so cruel that despite her prayers they forcibly cut off his head and took it away"

Srimad-Bhagavatam

SB Canto 9

With pitiable prayers, Reṇukā, the mother of Paraśurāma and wife of Jamadagni, begged for the life of her husband. But the sons of Kārtavīryārjuna, being devoid of the qualities of kṣatriyas, were so cruel that despite her prayers they forcibly cut off his head and took it away.

SB 9.16.12, Translation

With pitiable prayers, Reṇukā, the mother of Paraśurāma and wife of Jamadagni, begged for the life of her husband. But the sons of Kārtavīryārjuna, being devoid of the qualities of kṣatriyas, were so cruel that despite her prayers they forcibly cut off his head and took it away.