Your muslim friend doesn’t seem to know much about this issue.
Here - I’ll summarize it for you.
Mohamad had a dream which Gabriel took him up to heaven.
While there, Mohamad saw Adam, Moses, Jesus and Abraham on different levels of heaven.
So, now Mohamad is standing in front to Allah.
Allah told Mohamad that his followeres will need to pray **50 **times a day.
Mohamad walks away from Allah, runs into Moses & Moses asks Mohamad… how many times did Allah tell you to pray.
Mohamad replied with 50 prayers.
Moses said to Mohamad… go back & tell Allah, that is way too many prayers per day.
So, Mohamad goes back to Allah & Allah reduces the praying times to 25.
Mohamad walks away and again he bumps into Moses…
So Moses again asks what is the new prayer times.
Mohamad replied 25 times a day
Moses again said to Mohamad… go back & tell Allah the number of prayers is still too high.
Mohamad goes back to Allah & Allah now reduces that number by half… whatever 1/2 is of 25… is it 12 1/2 prayers…
So again, Mohamad walks away - bumps into Moses… again… & Moses informs Mohamad that the number of prayers is still to high.
Mohamad again goes back to Allah and it is now that Allah reduced all daily prayers to 5 times a day.
…
Phew… this was very tiresome to type…