Skandapurana 2.2.50.37

2.2.50.37

36 śayanotsavavratavidhikathanam, āṣāḍhīmārabhya kārtikīparyantaṃ cāturmāsyapuṇyakāla-
varṇanam, nānāvidhapāpakṣālanārthaṃ cāturmāsye tīrthasnānapuruṣottamādikṣetradarśanaphalam, cāturmāsye grāhyāgrāhyavastuvicārakathanam, cāturmāsye dhāryaniyamānukathanam, etaccāturmāsyodbhavavratamāhātmyaśravaṇaphalam.. .-- 108 1

36. Account of the rules for the vow of the festival of sleep; description of the auspicious period of Cāturmāsya starting from the full moon day of Āṣāḍha and ending with the full moon day of Kārttika; the fruit of ritual ablution in sacred fords and the darśana of the sacred field of Puruṣottama and others in Cāturmāsya for cleansing various kinds of sin; account of the examination of permissible and forbidden substances in Cāturmāsya; account of the observances to be maintained in Cāturmāsya; the fruit of hearing the māhātmya of this vow arising in Cāturmāsya... 108.1