Acting on a weak hadith

A short question on acting upon a weak hadith, in which Ibn Baz answered that "weak" covers grades with different rulings. ¹

The questioner asked whether a weak hadith may be acted upon. ¹

Ibn Baz divided reports described as weak into several kinds. ¹ A report that is hasan with a good chain is, in his view, acted upon. ¹ A severely weak report is not acted upon. ¹ As examples of severe weakness he gave a liar in the chain, a narrator of very poor memory, or a break in the chain. ¹

The answer is published on binbaz.org.sa, the official site of Ibn Baz's legacy, as fatwa 1014 in the al-Jami al-Kabir series. ¹ The museum records this answer as a historical text attributed to its author; it issues no ruling of its own.