Two Hadeeths: “Fast and you will be healthy” and “The sleep of a fasting person is an act of worship”

Question: How authentic are the following two Hadeeths? The Messenger of Allaah (peace be upon him) said: Fast and you will be healthy. And: Sleeping in Ramadaan is an act of worship. 

Answer: First: The phrase Fast and you will be healthy is a Da`eef (weak) Hadeeth. It was related by Al-Tabaraanee in Al-Awsat, Aboo Nu`aym on the authority of Aboo Hurayrah, and Ibn `Adee on the authority of Ibn `Abbaas. The Sanad (chain of narrators) of this Hadeeth contains Nahshal who has been judged by Hadeeth scholars as Matrook (a narrator whose Hadeeth transmission was discarded due to unreliability)… read more here.