Valmiki Ramayana Bala Kanda Sarga 70 Shloka 26
Original Shlokaमान्धातुस्तु सुत श्श्रीमान् सुसन्धिरुदपद्यत। सुसन्धेरपि पुत्रौ द्वौ ध्रुवसन्धि: प्रसेनजित्।।1.70.26।।
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मान्धातु: for Mandhata, सुसन्धि: Susandhi, श्रीमान् venerable, उदपद्यत was born, सुसन्धेरपि for Susandhi, ध्रुवसन्धि: Dhruvasandhi, प्रसेनजित् Prasenajit, द्वौ two, पुत्रौ sons.
Mandhata's son was prosperous Susandhi who brought forth two sons Dhruvasandhi and Prasenajit.