Bhagavatapurana 5.22.14

5.22.14

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ata ūrdhvam aṅgārako 'pi yojana-lakṣa-dvitaya upalabhyamānas tribhis tribhiḥ pakṣair ekaikaśo rāśīn dvādaśānubhuṅkte yadi na vakreṇābhivartate prāyeṇāśubha-graho 'gha-śaṃsaḥ //

14. Still further at a distance of two lakhs of Yojanas is to be seen Angaraka (Mars), generally traversing each of the signs of the Zodiac in three fortnights, completes his revolution through all the twelve signs; except when he is in retrograde progress, he generally indicates evil influence and hence he is accounted as an inauspicious planet.