Ruling on offering supplication between the iqamah and the start of the prayer

He was praying, then he heard the adhan. Should he complete his prayer?

He was not sure whether he had said the opening takbir, so he repeated it; was the prayer of those who were praying behind him rendered invalid?

Should the one who joined the prayer late move slightly so that he will have a sutrah or to make it easy for other worshippers to leave?

Praying in a building that was built over a graveyard

Ruling on a worshipper raising his forefinger when the imam recites a verse in which there is veneration of Allah, may He be exalted

He forgot to bow, and did not realize until his imam was prostrating

If the one who joined the prayer late gets up before the imam says the second tasleem

Turning power back on during the prayer after a power outage

If someone travels westwards and the times for prayer and breaking the fast at sunset are later than the times in the country that he left