金剛經纂要刊定記 5.50

5.50

阿耨池者。此贍部洲，從中向北有九黑山，次有大雪山，次有香醉山，於雪北香南有阿耨池。此云無熱惱，縱廣五十由旬，八功德水充滿其中。於中四面各出一大河，東名𣩦伽河，繞池一匝流入東海，南信渡河，西縛芻，北徒多，皆繞池一匝，如次入南西北海。今經恒河即殑伽也，言恒者，譯者訛也。

"Lake Anavatapta": in this Jambudvīpa, going north from the centre, there are nine Black Mountains, next there is the Great Snow Mountain (Himālaya), and next there is Mount Gandhamādana; north of the Snow Mountain and south of Gandhamādana is Lake Anavatapta. Here it translates as 'free from fever and distress.' It is fifty yojanas in length and breadth, filled with waters of the eight qualities. From within it, a great river emerges on each of the four sides: to the east is named the Gaṅgā River, which circles the lake once and flows into the eastern sea; to the south is the Sindhu River; to the west is the Vakṣu; to the north is the Sītā; all circle the lake once and enter respectively the southern, western, and northern seas. The 'Héng River' in the present sūtra is precisely the Gaṅgā; saying 'Héng' is an error of the translators.