Various masaail of Salaah

Performing Salaah with a microphone

Q: The tableeghis in most of the markaz do not use speaker during namaz or azan with the intention that it is near to the Prophet Sallallahu Alayhi Wasallam's time and they do not state use of speaker haram/illegal or bad in any sense and in some markaz speakers are used. In a big namaz they have multiple Mukabbirs. Please shed some light for our guidance.

Sajdah counter

Q: We have developed a new product which is placed in front of the prayer mat that records the number of Sajdas and Rakaats performed by the worshipper on a small screen. It has no video and no music. Using this product the worshipper is not confused or distracted regarding Sajdas performed. With this product a person can concrete and focus on praying which is very important. Please advise whether it is permissible to use this product to remember?

Performing Salaah on a musalla which was purchased with haraam money or through an invalid transaction

Q:

1. A musalla is purchased with haraam money. Is any Salaah performed on this musalla valid?

2. A musalla is purchased with halaal money, but the transaction was invalid and the seller still remains the Shari' owner. Is any Salaah performed on
this musalla valid?

3. A musalla is purchased by a person with a largely doubtful income. Is Salaah valid on this persons musalla?

A musalla is purchased by a person with a largely doubtful income. He gives this musalla to Zaid as a gift. Zaid knows the largely doubtful nature of
this persons income.

4. Should Zaid perform Salaah on this musalla?

5. Is the Salaah of Zaid valid on this musalla?

6. Is the Salaah of anyone valid on this musalla?

A Muslim woman gives a musalla as a gift to a Ghair Mahram Muslim man. They have a haraam business relationship and are very friendly with each other. This Ghair Mahram Muslim man then keeps this musalla at home which is used by his wife and children on a daily basis. They have been using this musalla for about two years now.

7. Is it correct to perform Salaah, or do any Ibaadah, on this musalla?

8. Are all the Salaah (approx. 2 years) and Ibaadah performed on this musallah by the Ghair Mahram Muslim man and others, primarily his family,
valid?

9. If not, is qadha necessary for these salaah?

10. Is Sajda-Sahw valid on this musalla?

11. If it is necessary to do anything with this musalla, like return it to the woman or give it in charity without the intention of reward, please
advise accordingly.