तर्पयित्वाथ सलिलैस्ते पितॄन् दैवतानि च । स्तुवन्ति स्मोदितं सूर्यं देवताश्च समाहिताः ॥

श्रीमद्वाल्मीकिरामायणे अरण्यकाण्डे षोडशस्सर्गः (४२व श्लोकमु) Valmiki maharshi describes the lifestyle of SitaRamaLakshmanas during chilling winter season. Even in that biting cold, they woke up well before sunrise, reached the banks of Godavari and took bath in its ice-cold waters. The above shloka says, “They then offered Tarpanams to PitruDevatas, and Devatas. They performed dhyaanam of…

उपास्य पश्चिमां सन्ध्यां सहभ्रात्रा यथाविधि । प्रविवेशाश्रमपदं तमृषिं सोभ्यवादयत् ॥

श्रीमद्वाल्मीकिरामायणे अरण्यकाण्डे एकादशस्सर्गः (७०व श्लोकमु) This shloka clarifies that RamaLakshmanas performed Sandhyavandanam in time and after that only entered the sacred ashram of the brother of Agastya. Hence we must also perform Sandhyavandana-adi-ahnikas in time before entering auspicious places like teertha-kshetrams (if Upanayanam has been performed).

प्रदक्षिणं मुनिं कृत्वा प्रस्थातुमुपचक्रमे ॥

श्रीमद्वाल्मीकिरामायणे अरण्यकाण्डे अष्टमस्सर्गः (१७व श्लोकमु) This shloka says that RaamaLakshmanas performed pradakshina-vadanams to the great Rushi Suteekshna, before leaving his ashram. Performing Pradakshina-namaskarams as per the shastras to Devatas, Maharshis, Kshetra-teerthas, is indeed an ancient custom for the Indians.

काल्यं विधिवदभ्यर्च्य तपस्विशरणे वने ।। उदयन्तं दिनकरं दृष्ट्वा विगतकल्मषाः ।

श्रीमद्वाल्मीकिरामायणे अरण्यकाण्डे अष्टमस्सर्गः (३-४ श्लोक) After spending the night at Sutikshna’s ashram, Seeta-Raama-Lakshmanas woke up in time and took bath in the near-by pond. This shloka means that they then performed Aahnikas, and Devata-archana as per their Saampradayam. Then they had darshan of Surya-Bhagavan.

ततः शुभं तापसभोज्यमन्नं स्वयं सुतीक्ष्णः पुरुषर्षभाभ्याम् । ताभ्यां सुसत्कृत्य ददौ महात्मा सन्ध्यानिवृत्तौ रजनीमवेक्ष्य ॥

श्रीमद्वाल्मीकिरामायणे अरण्यकाण्डे सप्तमस्सर्गः (२४ श्लोक) This shloka means that after Seeta-Raama-Lakshmana and Sutikshna maharshi finished their (respective) evening Sandhyavandanam, the maharshi offered atithi-satkarams, with great respect and affection, like arghya-paadya-saatvika-aahaaram to them. This shloka highlights the importance of daily duties like Sandhya-vandanam and serving the Atithis.

स दृष्ट्वा राघवः श्रीमान् तापसाश्रममण्डलम् । अभ्यगच्छन् महातेजा विज्यं कृत्वा महद्धनुः ॥

श्रीमद्वाल्मीकिरामायणे अरण्यकाण्डे प्रथमोध्यायः (९ श्लोक) On entering the Dandaka forests ShriRaama saw a group of Ashramas. The Ashramas were glowing with sacred articles like Sruk, Sruva, Darbha etc. The place was reverberating with sounds from birds, Veda chantings by Brahmanas, and dances by Apsaras. The rushis there were leading an extremely calm and ahimsa-ic life.…

सा तदा समलङ्कृत्य सीता सुरसुतोपमा । प्रणम्य शिरसा तस्यै रामं त्वभिमुखी ययौ ॥

श्रीमद्वाल्मीकिरामायणे अयोध्याकाण्डे एकोनविंशोत्तरशततमस्सर्गः (११ श्लोक) After wearing the divine clothes and ornaments given by AnsuyaDevi, Sita prostrated before AnasuyaDevi and saluted Her. Performing namaskarams to elders after wearing new clothes is indeed an ancient custom of Indians.