Śrāddha-kalpa: Amarakantaka–Tīrtha-Māhātmya and Akṣaya Pitṛ-Tarpaṇa
मुण्डपृष्टे पदं न्यस्तं महादेवेन धीमता / बहुदेवयुगांस्तप्त्वा तपस्तीव्रं सुदश्चरम्
muṇḍapṛṣṭe padaṃ nyastaṃ mahādevena dhīmatā / bahudevayugāṃstaptvā tapastīvraṃ sudaścaram
Upon Muṇḍa’s back the wise Mahādeva set his foot; through many deva-yugas he performed intense tapas, most difficult to endure.