Matsya Purana 264.10

264.10

grahatārābalaṃ labdhvā grahapūjāṃ vidhāya ca.
nimittaṃ śakunaṃ labdhvā varjayitvādbhutādikam .. 264.9

At such a conjunction of auspicious planets and stars avoiding the influence of evil stars, one should consecrate an idol in an auspicious place after worshipping the planets (doing the Graha pûjâ). Good omens are to be watched for, evils, e.g. adbhuta, etc., are to be avoided And on an auspicious day and in an auspicious place, when the Lagna (rising asterism) is free from malific planets and under an auspicious star one should consecrate an idol.—9-11