Femme, nonne et arhat

Once, while Mahánága was begging alms at Nakulanagara, he saw a nun and offered her a meal. As she had no bowl, he gave her his, with the food ready in it. After she had eaten and washed the bowl, she gave it back to him saying, “Henceforth there will be no fatigue for you when begging for alms.” Thereafter the Elder was never given alms worth less than a kahápana. The nun was an arahant. DhSA.399

Cf. Take It or Leave It' and the Ground Between, an article by Thanissara Mary Weinberg, one of the first four siladhara who is now a renowned Dhamma teacher in South Africa