Zikr & Dua

Durood-e-hada

Q: Is there any Durood Sharif called Durood-e-hada (I may have pronounced it wrong). Someone informed me that it has great merits if recited before someone’s grave.  

Lady making dua in congregation

Q: If one pious lady (mother-in-law) makes Ijtima'i Dua (group of people, only for her family) and others (Daughters, Son, Daughter-in-law and Son-in-law) said “Ameen”.  This scenario is happened due to son-in-low bought a new flat and mother-in-law make Dua for Barka. Because Women is not allowed to make as leader any program in Islamic Sharia.

Using a Tasbeeh

Q: Is it permissible in Islam to do zikr on a Tasbeeh because some one said that our Holy Prophet (Sallallahu Alayhi Wasallam) never used a Tasbeeh in his life. 

Reciting Durood a Thousand Times

Q:

  1. I came accross a hadith that says one needs to read a specific durood a thousand times and he will not leave this world until he sees his abode in jannah (something to the effect). Is there any hadith that says any durood could be read including the durood "Sallallahu Alayhi Wasallam" and one will get the same benefit? 
  2. I read at least one friday (begining from the thursday night) 1000 times "Sallallahu Alayhi Wasallam". Now am I guranteed jannah because we do not doubt what our prophet Muhammad (Sallallahu Alayhi Wasallam) said?