gītā dhyāna - Verse śloka 6
śloka 6
bhīṣmadroṇatatā jayadrathajalā gaṃdharānilotapalā
śalyagṛhavati kṛpeṇa vahni karṇena velakulā
aśvatthāmā vikarṇa ghoramakārā duryodhanavarthī
sothirnā khalu pāṃḍavai rānānādi kaivartakaḥ kesavaḥ
Translation
The Pandavas crossed the impenetrable rock of Bhishma and Drona on both banks, the water of Jayadratha, the black rock of Gandhara, the crocodile of Shalya, the current of Kripa, the tide of Karna, the terrible sharks of Ashvatthama and Vikarna, and the whirlpool of Duryodhana—only by the grace of Bhagavan, the divine boatman.