Hadith

A fabricated hadith regarding a dua at the time of azaan

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)

Hadith on standing for a brief while in the path of Allah Ta'ala

Q: Rasulullaah (sallallahu alaihi wasallam) said, “Standing for a brief while in the path of Allaah is better than performing salaah for sixty years at home. Do you not want your sins to be forgiven and to enter Jannah?” (Mustadrak).

Is this only for jihad where you have to fight kuffar or mushreekeen or this sawab can also be obtained in tableegi jamaat where you have to stay in different mosque and call people towards Allah. 

Exactly what is Allah's way? I have heard that a person that earns halal is in Allah's way and a person walking towards the mosque for salah is in Allah's way. Now the sawab of more than 60 years nafil salah can be obtained by the person earning halal and walking towards the mosque for salah?

Explanation of the hadith regarding a person traveling alone

Q: There is hadith narrated by Abdullah ibn Amr ibn al-'Aas (radhiyallahu anhu): The Messenger of Allah (ﷺ) said: A single rider is a devil, and a pair of riders are a pair of devils, but three are a company of riders. Grade: Hasan Reference: Sunan Abi Dawud 2607 In-book reference: Book 15, Hadith 131 

I travel alone for my college which is far, so what does this hadith mean?