व्यपोहनस्तवनिरूपण-प्रसङ्गे नक्तभोजन-शिवव्रतविधिः (वार्षिक-प्रतिमास-क्रमः)
पौर्णमास्यां च पूर्वोक्तं कृत्वा शर्वाय शंभवे ब्राह्मणान् भोजयित्वा च दरिद्रान्वेदपारगान्
paurṇamāsyāṃ ca pūrvoktaṃ kṛtvā śarvāya śaṃbhave brāhmaṇān bhojayitvā ca daridrānvedapāragān
Und am Vollmondtag, nachdem man den zuvor genannten Ritus für Śarva—Śaṃbhu (Herrn Śiva) vollzogen hat, soll man auch die Brāhmaṇas speisen, besonders die Armen, die doch der Veden kundig sind.
Suta Goswami (narrating to the sages of Naimiṣāraṇya)
It links Linga/Śiva-pūjā to dāna and anna-sevā: after completing the prescribed Śiva-rite, feeding qualified Brāhmaṇas is presented as an integral limb of worship that helps loosen pasha (bondage) and orient the pashu (soul) toward Pati (Śiva).
By naming Śiva as Śarva and Śaṃbhu, it emphasizes his dual function in Śaiva Siddhānta terms: he removes impurities/obstructions (mala and karmic knots) and bestows auspicious welfare and inner peace, guiding the soul toward liberation.
A Paurṇamāsī observance: perform the previously taught Śiva-pūjā/vidhi and then offer bhojana (food-gift) to Brāhmaṇas—especially poor Veda-knowers—treating charity and service as a practical extension of devotion and discipline.