Authentication

Q: In a newer version of the book contentment of the heart, it has something called Dua e Ganjul Arsh. 

Is this a reliable and established amal?

Q: Some scholars state "It is possible that sins reduce ones lifespan." Is it true? Is it disbelief to believe this?

Q: Is there an Hadith or sayings in Islam that prohibits the hanging of wet laundry outdoor overnight to dry?

Q: Is the following Hadith authentic or is it a fabrication? 

It is reported in the Hadith that whoever passes by the graveyard and recites Surah Ikhlaas eleven times, he will receive reward equivalent to the number of the inmates of the graves. 

Q: Was our Nabi (sallallahu alaihi wasallam) instructed by the other prophets he met during me'raj to inform the people to do cupping?

Q: Is the following authentic to be read at the time of azaan: 

مَرْحَبَّا بِالْقَائِلِينَ عَدْلاً مرْحَبًا بِالصَّلَوةِ وَأَهْلاً

Khateeb Baghdadi (rahimahullah) reports in a narration that Nabi (sallallahu alaiyhi wasallam) has said that whoever says the above the moment the Muazzin proclaims the Azaan; 20 000 virtues are written down for him; 20 000 sins are forgiven; and 20 000 ranks are elevated for him. (Jaamia Al Hadeeth, As-Suyuti, Pg 313, Vol 7)

Q: Is there an authentic Hadith stating that fasting on the day of Arafah equals the fasting of 2 years (as appears in Tanbeehul Ghafileen, baab 39, fadlu ayyaamil ashri)?

Q: What is authentic hadith on bending our hand on our body?
- Under the navel 
- On the chest 

Q: Is there any prohibition in the shariah on carrying or traveling with raw meat or cooked meat at night?

Q: I've heard people mention that if a person does not pay a single rupee of his debt in this world, he will have to give 70 accepted salaah in the aakhirah to his creditor for that rupee. 

Is this authentic and found in the Hadith?