The rod of punishment was given to Brahmana's latest-born son, viz., Kshupa, the lord of all creatures and the foremost of the virtuous.
तमेनं ब्रह्मणः पुत्रमनुजातं क्षुपं ददौ। प्रजानामधिपं श्रेष्ठं सर्वधर्मभृतामपि॥