Matsya Purana 246.90

246.90

yato yadukule kṛṣṇo bhavataḥ śatrunigrahe.
sahāyabhūtaḥ sārathyaṃ kariṣyati balānujaḥ .. 246.90 ..

Thus the Lord had tied the demon king Bali for the benefit of the Devas, in the Pâtâla who is there unto this day. O Arjuna ! your kith and kin, Lord Śrī Kriṣṇa who is enshrined at Dvârikâ, is also there with the object of vanquishing the demons. He will be your charioteer O Arjuna ! as you wanted to hear the history of Lord Vâmana, I have narrated to you all about Him.