Skanda Purana 7.20.254

7.20.254

bhastrāpade devatābhiḥ śivaliṅgāni saṃsthāpya svasvanāmmā tīrthānāṃ sthāpanam . vajropala (bhastrāpada?) nāmni himavacchikhare gaṅgāvataraṇaprekṣaṇāya mahataḥ samājasyopasthitiḥ, umāsahāyasya devadevasya tatrāgamanam . mahādeva- vacanād bhagīrathena gaṅgāyāḥ saṃsmaraṇam, gaṅgāyāḥ svarlokādavataraṇam, divovatarantyā gaṅgāyā madhyepatha- mākāśagaṅgādināmaniṣpattiḥ, tasyā eva punastrisrotādi nāmāntaraniṣpattiḥ . tribhirvegairmahatā javena patantyā gaṅgāyāḥ śivena svajaṭābhāre grahaṇam . jaṭājūṭevaruddhāyāstasyāstatraiva cirakālamavasthānam . devānāṃ prārthanayā śivena svajaṭābhārād gaṅgāyā avamocanam . bindusarasa utpattiḥ, gaṅgāyāstribhiḥ srotobhistato niḥsaraṇam . tasyā madhyasrotaso bhāgīrathīti samākhyā . gaṅgādvārotpattiḥ, gaṅgāvataraṇasthalasya bhastrāpadamityākhyā .

The installation of Śivaliṅgas by the deities at Bhastrāpada and the establishment of sacred fords under their respective names. The gathering of a vast assembly on the peak of the Himalayas named Vajropala (or Bhastrāpada?) to witness the descent of the Gaṅgā; the arrival there of the God of Gods accompanied by Umā. Bhagīratha's invocation of the Gaṅgā upon the word of Mahādeva; the Gaṅgā's descent from the heavenly world; during her descent from heaven along the path, the origin of names such as Ākāśagaṅgā; furthermore, the origin of other names of hers such as Trisrotas. Śiva's catching in his mass of matted hair the Gaṅgā falling with immense force in three streams. Her remaining confined within the knot of matted locks for a long time. Śiva's releasing the Gaṅgā from his mass of matted hair at the prayer of the gods. The origin of Bindusaras; the issuing forth of the Gaṅgā from there in three streams. The designation of its middle stream as the Bhāgīrathī. The origin of Gaṅgādvāra; the naming of the place of the Gaṅgā's descent as Bhastrāpada.