Conditions for the validity of Salaah

Joining two Salaahs in one time

Q: Please advise on the ruling regarding joining of Salaahs when one is a musaafir. Most people join their salaah saying it is permitted as a musafir and better to join than miss it. And in which circumstances will it be permissible to join? If a person joins their Salaah regularly as a musafir will the salaah be valid?

When does Tahajjud time end?

Q: I have two questions which I kindly request you to answer me.

1. I have doubt regarding tahajjud Salaah. I want to know when it exactly ends. Say the fajr Salaah starts at 5.23 am in where I live , now. Till wheat time then can we pray tahajjud Salaah? I want to know the timing so I can rectify if I make any mistakes.

2. Can we recite salawatun naariya with a particular niyat to be fulfilled? Where I live people recite it 4444 times with a particular niyat he or she has. Is it permissible?

The time of ishraaq Salaah

Q:

1. When does the time of Ishraaq end?

2. A person engages in Zikr after Fajr Salaah till the commencement of Ishraaq. He stops his Zikr, performs his Ishraaq at this earliest time, and thereafter resumes his Zikr until completion. Will it be better for him to complete all his Zikr first, and then perform his Ishraaq Salaah? Or will it be better to pause his Zikr and perform Ishraaq at the earliest time?