Mahabharata 13.14.86

ततोऽहं तप आस्थाय तोषयामास शंकरम्दिव्यं वर्षसहस्रं तु पादाङ्गुष्ठाग्रविष्ठितः

tato'haṃ tapa āsthāya toṣayāmāsa śaṃkaramdivyaṃ varṣasahasraṃ tu pādāṅguṣṭhāgraviṣṭhitaḥ

Our plain-language meaning of this verse is waiting for scholar review.