It is narrated from Sayyiduna Awf bin Malik (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "I and a woman with darkened cheeks will be like these two (fingers): a woman who was widowed and held herself back (from marriage) for the sake of her daughters until they were married or they died."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 15194