साऽपनीय तमायासं उपस्पृश्य जलं शुचिः । चकार माता रामस्य मङ्गळानि मनस्विनी ॥

–श्रीमद्वाल्मीकिरामायणे अयोध्याकाण्डे पञ्चविंशस्सर्गः (१) After realizing that ShriRaama going to the forests is Dharma, Kausalya decides to bless Him and wish for the good. In that situation Valmiki says this shloka that illustrates the importance of शुचिः (shuchi) and more specifically, आचमनम् (aachamanam)… “Overcoming grief, Kausalya, who had a pure heart, performed aachmanam and then blessed ShriRaama”.…

प्राञ्जलिर्वज्रसहितो दितिं शक्रोऽभ्यभाषत । अशुचिर्देवि सुप्तासि पादयोः कृतमूर्धजा ॥

— श्रीमद्वाल्मीकिरामायणे बालकाण्डे षट्चत्वारिंशस्सर्गः (22) This shloka is told by the great sage VIshwaamitra to Shri Raama and means the following. Lord Indra humbly performed namaskar to his step-mother, Diti, and spoke these apt words “O Devi! You became अशुचि (impure) because today you slept with your head on that side where you usually put your feet…

अभिगच्छामहे सर्वे शुचयः पुण्यमाश्रमम् । स्नाताश्च कृतजप्याश्च हुतहव्या नरोत्तम ॥

— श्रीमद्वाल्मीकिरामायणे बालकाण्डे त्रयोविंशस्सर्गः (१७) Vishwamitra, who was described as “एष विग्रहवान् धर्म” (he is the dharma in human form) by none other than brahmarshi Vasishtha (refer 21st sarga of balakanda), and his disciples Rama and Lakshmana, reached the sacred place where the river Sarayu merges into the river Ganga at an evening time. At…