A proverb meaning 'women may be perceived as weak, but mothers are strong' — emphasizing the strength and devotion of mothers.
子供が病気のとき、普段は物静かな彼女が驚くほど行動的になった。女は弱しされど母は強しだ。
When her child was ill, she — usually calm — became remarkably active. Women may seem weak, but mothers are strong.
あの困難な時期を乗り越えたのは、まさに『女は弱しされど母は強し』の実例だ。
Her getting through that difficult time is exactly an example of 'women may seem weak, but mothers are strong.'