Skanda Purana — Kashi Khanda, Shloka 73
अतस्तयोः प्रियं कुर्याद्गुरोरपि च सर्वदा । त्रिषु तेषु सुतुष्टेषु तपः सर्वं समाप्यते
atastayoḥ priyaṃ kuryādgurorapi ca sarvadā | triṣu teṣu sutuṣṭeṣu tapaḥ sarvaṃ samāpyate
因此，应当恒常行令母与父欢喜之事，并亦令师长（古鲁）欢喜。此三者若得深深满足，则一切苦行（tapas）皆算圆满成就。
Skanda
Tirtha: Kāśī
Type: kshetra
Scene: A devotee in Kāśī offers respectful service: washing the guru’s feet, then tending to parents; above them a subtle radiance signifies ‘tapas fulfilled’ without dramatic asceticism.
FAQs
Serving and satisfying mother, father, and guru is treated as the essence and completion of austerity.
The verse is part of Kāśīkhaṇḍa instruction—Kāśī’s sacred tradition frames daily ethics as pilgrimage-based dharma.
The prescription is devotional service (seva) to parents and guru, presented as equivalent to performing austerities.