Al-Mu'jam al-Awsat 8311 — the Messenger of Allah ﷺ said

It is narrated from Sayyiduna Abdullah bin Amr (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "The menstruating woman should wait up to ten days; if she sees purity during that time, she is pure, and if it goes beyond ten days, she is a mustahadah (a woman with irregular bleeding): she should take a ritual bath and pray. If the blood overwhelms her, she should put in cotton or cloth, bind herself with a loincloth and perform ablution for every prayer. And the woman in postnatal bleeding should wait up to forty nights; if she sees purity before that, she is pure, and if it goes beyond forty, she has the ruling of the mustahadah: she should take a ritual bath and pray, and if the blood overwhelms her, she should put in cotton or cloth, bind herself with a loincloth and perform ablution for every prayer."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Abdah bin Abi Lubabah except Ibn Ulathah, and Amr bin al-Husayn is alone in narrating it."