Can a hadeeth be accepted from a narrator who suffered from mental problems?

The hadeeth “Blessed is (Greater) Syria” is a saheeh hadeeth

The hadith: “Every matter that does not start with remembrance of Allah is incomplete”

A Superior Dhikr

Are there any saheeh ahaadeeth which speak of the ransoming of the living and the dead during Ramadaan?

Hadeeth about the one who is secure in his property

Regarding the hadeeth about the blind man who killed his slave woman who had borne him a child (umm walad) because she reviled the Prophet (peace and blessings of Allaah be upon him)

Confusion about the hadeeth of the blind man who killed his slave woman who reviled the Prophet (peace and blessings of Allaah be upon him)

Ahadith of the Prophet (peace and blessings of Allah be upon him) which criticize extravagance with regard to food

Good deeds appear in the form of a man in the grave