If Mercury should cut through the constellations of Śravaṇa , Dhaniṣṭhā , Rohiṇī , Mṛgaśīrṣa and Uttarāṣāḍha , sacred respectively to Viṣṇu , Aṣṭavasu, Brahmā , the Moon and Viśvedevā, his disc appearing to rub against those of the stars, he causes drought and disease in the land.