Getting a fixed return from an investment

Q: I give $5000 to a person in pakistan for investment. He told me that he will give me monthly $300/month on the top of that money. The condition is that the amount on top of $5000 can be $300 or more or less depending upon the business sales.

The second condition is that the owner told me that I can't give you guarantee for $5000 as incase if theres a loss then he will not be responsible for the loss.

My question is, is the $300/monthly return on the $5000  halal or haram?

Business in the musjid

Q: From what I understand, it is impermissible to do business in the Musjid. However we find that with the widespread technology around us, business methods have transformed drastically. A person could be doing banking, checking banking statements, creating, reviewing or viewing pricellists or adverts, making bookings and even doing his shopping with the use of a mobile device.

We often find people doing such form of business related work, shopping or even casually browsing through adverts which are received in the form of messages, whilst being seated within the Musjid. Is this permissible?

Pronouncing the name Muhammad correctly

Q: Different people, even Arabs, say "Muhammad"differently. I say it as "Muhammd" without the last vowel "a" and sometimes as "Muhammed" in daily life and in prayers (we need to mention the name of the Prophet (sallallahu alaihi wasallam) in tashahud and durood after tashahud. I did it in the past as this is how my non-Arabic tongue works. Does it matter for prayer?

Is greenish discharge considered haidh?

Q:

1. Is greenish discharge during haidh also considered as blood?

2. I’m in haidh. Today, whilst using the toilet, a lot of discharge came out and I wasn’t aware (as didn’t feel its release) until I wiped and saw discoloured discharge on my tissue. After washing and wiping, myself, towards the end I decided to wipe against my private area once more and I saw a small amount of dampness and i think a small amount of clear discharge. (I’ve read that discoloured discharge thats considered haidh doesn’t have to be completely discoloured, it can be mixed with both clear and coloured discharge.) I didn’t feel the release of this discharge and I’ve made the assumption that it could be leftover of the discoloured discharge I got a few minutes earlier that I forgot to wipe off. Was this okay of me to assume?

Eating prasad from a Hindu

Q: Recently one of my Hindu friends knocked at my room door in the hostel and gave me a slice of apple. He said it is Prasad so I took it and kept it one side in my room and I didn't eat it... Did I commit a sin? One scholar told me that only eating meat is not allowed of Hindus... we can eat fruits or sweets. I am really confused.