Skandapurana 5.198.58

5.198.58

śakratīrthamiti khyātaṃ caturthaṃ bālamaṇḍanam ..
tatra snātvā ca paṃcāhaṃ śakreśvaramavekṣya ca ..
āśvinasya site'ṣṭamyāṃ sarveṣāṃ labhate phalam .. 58 ..

The fourth, renowned as Śakratīrtha, is an ornament for children. / Having bathed there for five days and having looked upon Śakreśvara / on the bright eighth day of Āśvina, he obtains the fruit of all of them.”