The Compendium of Kāśyapa 8.6.75

8.6.75

ṣaṭ pañcakāḥ | ṣaṇṇāṃ rasānāṃ madhurāmlalavaṇakaṭutiktakaṣāyāṇāmekaikamapanayitavyāḥ ṣaṭ pañcakā niṣpadyante | tadyathā-amlalavaṇakaṭutiktakaṣāyaḥ madhuralavaṇakaṭutiktakaṣāyaḥ madhurāmlakaṭutiktakaṣāyaḥ madhurāmlalavaṇatiktakaṣāyaḥ madhurāmlalavaṇakaṭukaṣāyaḥ madhurāmlalavaṇakaṭutikta iti | ta ete ṣaṭ pañcakāḥ
ṣaḍbhirmadhurāmlalavaṇakaṭutiktakaṣāyairekaḥ | tadyathā--madhurāmlalavaṇakaṭutiktakaṣāya iti | ta evamete rasāstriṣaṣṭidhā bhinnāḥ tatra
saṃyuktāḥ saptapañcāśat asaṃyuktāḥ ṣaṭ

There are six quintuple combinations. By omitting one taste at a time from the six tastes—sweet, sour, salty, pungent, bitter, and astringent—six quintuple combinations are produced, namely: sour-salty-pungent-bitter-astringent, sweet-salty-pungent-bitter-astringent, sweet-sour-pungent-bitter-astringent, sweet-sour-salty-bitter-astringent, sweet-sour-salty-pungent-astringent, and sweet-sour-salty-pungent-bitter. These are the six quintuple combinations. There is one combination of all six tastes: sweet-sour-salty-pungent-bitter-astringent. Thus, these tastes are divided into sixty-three varieties; among them, fifty-seven are combined, and six are uncombined.