Pitṛ-Śrāddha Vidhi: Rājata-dāna, Kṛṣṇājina, and Vedi/Garta Construction
Ancestral Rite Protocols
तथा श्यामाकनीवारा दूर्वा च समुदाहृता / पूर्वं कीर्त्तिमतां श्रेष्ठो बभूवाश्वः प्रजापतिः
tathā śyāmākanīvārā dūrvā ca samudāhṛtā / pūrvaṃ kīrttimatāṃ śreṣṭho babhūvāśvaḥ prajāpatiḥ
So too are śyāmāka, nīvāra, and dūrvā grass spoken of. In ancient times, among the renowned, the Prajāpati named Aśva was the foremost.