Answer

The Ashtāhnikā Granth is traditionally associated with Āchārya Kundakunda in the Digambar Jain tradition.

Explanation

Ashtāhnikā refers to the sacred eight-day Jain observance period that occurs three times a year. Texts connected with Ashtāhnikā describe devotion, worship, reflection, and spiritual practices performed during these auspicious days.

Takeaway

In Jain tradition, Āchārya Kundakunda is regarded as the author connected with Ashtāhnikā Granth, especially in the Digambar tradition.