Nuns’ rules and their analysis
Nuns’ Expiation (Pācittiya) 62
… at Sāvatthī in the Jeta Grove in Anāthapiṇḍika’s monastery. Now at that time nuns ordained a woman giving suck. She walked for alms. People spoke thus: “Give almsfood to the lady, the lady has a companion.” The people … spread it about, saying: “How can the nuns … Bi-Pc.61.1, instead of pregnant woman read woman giving suck …” “… this rule of training:
“Whatever nun should ordain a woman giving suck, there is an offence of expiation.”
Woman giving suck means: she is a mother or a foster-mother.
Should ordain means: … Bi-Pc.61.2. Read, If she thinks that she is a woman giving suck when she is a woman giving suck; if she thinks that she is not a woman giving suck, etc. … if she is the first wrong-doer.