This is an excerpt from a talk given during a retreat on Therīgāthā – Awakening Verses of the Early Buddhists Nuns in June 2020.
The full talk, along with others from the retreat, can be found here on the Dharma Seed website.
The collection of poems Ayya refers to is “The First Free Women: Poems of the Early Buddhist Nuns”, by Matty Weingast.
Below is the Bikkhuni Lineage Chant from the retreat.