Skandapurana 1.4.34.34

1.4.34.34

paśyedvā smarate vāpi sarvadoṣairvimucyate..
siddheśvaraḥ siddhavaṭaśca sākṣātsiddhāṃbikā siddhavināyakaśca..
siddheyakṣetrādhipatiśca siddhasarastathā siddhakūpaśca sapta.. 36.34 ..

or sees them or even remembers them, he is freed from all faults: / Siddheśvara, the Siddhavaṭa, Siddhāmbikā in person, Siddhavināyaka, / Siddheya, the Lord of the Field, the lake Siddhasaras, and the well Siddhakūpa—these are the seven.