Mahīśāsaka Vinaya
Bhikkhunī Vibhaṅga
Confession 142
Mahīśāsaka Vinaya, fascicle 14 (Mahīśāsaka).
Translated by the Kāśmīra Tipiṭaka master Buddhajīva together with Zhú Dàoshēng during the (Liu) Song dynasty.
Part 2.4.
Origin Story
At that time, the bhikkhunīs went to lay houses wearing leather sandals and holding umbrellas. The lay people criticized them: “These bhikkhunīs walk around like prostitutes.” When the senior bhikkhunīs heard it, they criticized them in all kinds of ways, … “I now lay down a precept for the bhikkhunīs, as explained above. From now on, this precept should be recited thus:
Final Ruling
‘If a bhikkhunī walks around wearing leather sandals and holding an umbrella, it’s a pācittiya.’”
Explanations
“An umbrella” means even just a grass umbrella
“Leather sandals” means even just one-layered.
For a sikkhamānā and a sāmaṇerī, it’s a dukkaṭa.
The non-offenses are as above.