प्रसूतमथ शैलेषु पुत्रान्निजकुलाङ्कुरान् ।अत्यन्तविषमोदन्तान्खदिरः कण्टकानिव
In plain words
and then, in the mountains, begetting sons -- sprouts of his own line -- of exceedingly harsh and crooked ways, as the khadira tree puts forth thorns,
प्रसूतमथ शैलेषु पुत्रान्निजकुलाङ्कुरान् ।अत्यन्तविषमोदन्तान्खदिरः कण्टकानिव
and then, in the mountains, begetting sons -- sprouts of his own line -- of exceedingly harsh and crooked ways, as the khadira tree puts forth thorns,