Q: Is there any authentic hadith from the books of hadith about the forty steps for each person to carry the janazah?

Q:

1. Please let me know if installing a gravestone with the name of the deceased inscribed on it for the purpose of identification is Jaiz? I am told that the Prophet (Sallallahu Alayhi Wasallam) had put a gravestone on the graves of his son Ibrahim (Alayhis Salaam) and also a Sahabi Uthmaan bin Mazoon. Even today we notice gravestones in many of the graves at jannatul Baqi. 
2. Is it compulsory to reuse a grave inspite of sufficient vacant space being available in the graveyard? If required after how long can a grave be reused?

Q: I have saved up enough money to make Hajj become fardh on me however, I still have a substanial balance left on the car which I drive. What comes first, do I pay the car off or do I make intention and effort to go for hajj?

Q: Would a person gain thawaab if he listens to qiraat which is recorded or is the thawaab only gained when he listens to qiraat which is read live?

Q: Why is the waiting period not obligatory after committing fornication?

Q: If you are praying and notice that you are preventing someone from going past you because of your prayer, is it permissable in this case to move slighly (e.g. 1 step) to give the person space to pass? Or will this be like obeying a command from outside the prayer, hence invalidating it?

Q: Last Friday I made a mistake when I looked at the prayer times on the internet. The site I looked at gave two times for Esha. One time for 17 degrees (which is the view of Abu Yusuf, Imaam Muhammad, Shafi, Maalik, Ahmad bin Hanbal) and one time for 19 degrees (which is the opinion of Abu Hanifa). The mosque I go to use an even a earlier time of 15 degrees for Esha. My calendar at home uses 12 degrees. Now last Friday the time for Esha for 17 degrees was 23:10 and for 19 degrees it was 23:33 o'clock. Now when I go to the mosque for Esha I pray with the jamaat who pray at 15 degrees for Esha. But when I pray at home I used to pray at 19 degrees. So last Friday I prayed Esha with my brother at home by mistake at 17 degrees, and the next day on Saturday I prayed also on 17 degrees. I came to know this the next day on Sunday after Fajr time was expired. Now what should I do? I am not sure what to do therefore I ask you. Can I consider them valid as I prayed at 17 degrees which is valid according to all Imaams except Abu Hanifa? Or must I repeat first those two Esha and Witr prayer before I pray the current prayer of the time? If yes, what about the prayers I prayed in the meanwhile before getting your answer? Or should I wait until 6 prayers are passed over the Esha prayer I peformed at 17 degrees, then pray those two Esha and Witr prayers at any time? Or did I have to repeat those two Esha and witr prayers, then repeat the Fajr then pray the prayer that is coming i.e. Dhuhr?

Q: I am a student of deen and I would humbly request Mufti saheb to help me in the issue of bidah. I want a ﺟﺎﻣﻊ definition of bidaah that excludes everything we doing and includes the other deviated sects.

Q: If a person has an excuse to perform the two rakaats fardh of fajr at home, can he perform his Salaah just after the azaan has commenced or does he have to wait until the time the two rakaat fardh are being performed in the musjid? 

Q: I have a doubt in mind that maybe I'm on the wrong path being a Deobandi. I think maybe salafism or barelwiat maybe the right path. How can I be sure that Deobandiat is the right path on which today's Muslims should act as the salafees and the barelwis also present the Qur'an and the Hadith?