From The Letters of Rennyo Shonin (Gobunsho) Fascicle 5, Letter 17
All women, if you seriously care about the afterlife and turn to the Buddha Dharma with sincere devotion, you should just entrust yourselves deeply to Amida Tathagata and, casting aside various practices, single-heartedly rely on Amida with the firm assurance of your emancipation in the afterlife. Then you will be unfailingly born in the land of bliss. There should never be any doubt about this.
After having attained this understanding, you should simply say “Namo Amida Butsu, Namo Amida Butsu, …” whether awake or asleep, with gratitude and appreciation, accepting deep in your mind Amida Tathagata’s readiness to save you. You will then be called nembutsu practicers who have attained the entrusting heart.
Humbly and respectfully.