Brāhmaṇya-प्रश्नः — The Inquiry into Attaining Brāhmaṇya
Mataṅga–Gardabhī Itihāsa
कुल्यायां समुपस्पृश्य जप्त्वा चैवाघमर्षणम् | अश्वमेधमवाप्रोति त्रिरात्रोपोषितो नर:,जो मनुष्य कुल्यामें स्नान करके अघमर्षण मन्त्रका जप करता है तथा तीन राततक वहाँ उपवासपूर्वक रहता है उसे अश्वमेधयज्ञका फल मिलता है
kulyāyāṃ samupaspṛśya japtvā caivāghamarṣaṇam | aśvamedham avāpnoti trirātropoṣito naraḥ ||
Having bathed in a canal (or sacred watercourse) and recited the Aghamarṣaṇa mantra, a man who fasts there for three nights attains the merit of the Aśvamedha sacrifice.
अजड्रिय उवाच
Great ritual merit is linked not only to costly ceremonies but also to inner discipline: purification by bathing, sincere mantra-recitation, and sustained fasting (three nights) can confer the fruit traditionally associated with the Aśvamedha.
Ajadriya describes a specific observance: bathing in a kulyā, reciting the Aghamarṣaṇa mantra, and fasting for three nights. He states that this practice grants the merit of an Aśvamedha, presenting an accessible dharmic alternative to grand royal sacrifice.