Bhagavatapurana 5.23.9

5.23.9

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graharkṣatārāmayam ādhidaivikaṃ pāpāpahaṃ mantra-kṛtāṃ tri-kālam /
namasyataḥ smarato vā tri-kālaṃ naśyeta tat-kālajam āśu pāpam //

9. That sin is at once and then and there washed off which is committed by the Person who thrice a day worships with the said Mantra and contemplates that Supreme Ruler of the gods as Sisumara that embodies in Himself all the planets, constellations and stars, and purifies His worshippers.