उमामहेश्वरव्रतं—पञ्चाक्षरमन्त्रस्य माहात्म्यं, न्यासः, जपविधिः, सदाचारः, विनियोगः
करयोरुभयोश्चैव दशाग्रांगुलिषु क्रमात् प्रक्षाल्य पादावाचम्य शुचिर्भूत्वा समाहितः
karayorubhayoścaiva daśāgrāṃguliṣu kramāt prakṣālya pādāvācamya śucirbhūtvā samāhitaḥ
Затем, в должном порядке, следует омыть кончики пальцев обеих рук, очистить стопы и совершить ачаману; став чистым и собранным внутри, пусть пребывает в спокойствии для поклонения Пати, Господу Шиве.
Suta Goswami (narrating Shiva-puja procedure to the sages at Naimisharanya)
It establishes śauca (ritual cleanliness) and mental steadiness as prerequisites for Linga-pūjā—purifying the senses and body so the worshipper approaches Pati (Śiva) with disciplined reverence.
By implying that Śiva is approached through purity and samāhita-citta (collected awareness), the verse aligns with Shaiva Siddhānta: the bound pashu turns toward Pati by reducing pasha—impurity and distraction—before worship.
Ācamana and preparatory washing (hands, fingertips, feet) are paired with samādhāna (mental composure), showing the union of karma (ritual discipline) and yoga (inner concentration) in Shiva-pūjā.