Markandeyapurana 58.81.p1

58.81.p1

iti śrīmārkaṇḍeyapurāṇe kūrmaniveśo nāmāṣṭapañcāśo 'dhyāyaḥ

The countries are placed in the Tortoise, and the constellations in these countries, O brāhman, and the signs of the zodiac in the constellations, the planets in the signs of the zodiac.[312] Therefore one should indicate calamity to a country when its particular planets and constellations are occulted. In that event one should bathe and give alms and perform the homa oblation and the rest of the ritual.