The prayer is valid! She was wrong in removing the chair as she had no right in distracting you like this. She could have waited until you finished.

While I was praying by keeping a chair as sutrah, a woman picks up that chair and replaced it with a big hand bag. Is that a great sin that she should repent? Do I need to repeat the prayer?

Prayer | May 28, 2017 4:07 am
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During the khutbah,the donation box in the masjid is passed to the musolli and every mussolli has to pass the box to the person next to him irrespective whether they put some money in it or not.We know that during khutbah,it’s wrong to collect donation like this.So,during khutba,if I fall into such situation of passing the box to next person,will rewardof my jummah be void?
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Is it correct the way Hanafi madhab’s people pray? Keeping hand at the navel while standing position. Don’t do rafidain. Are all these correct? If so are there strong Hadith from all the 4 authentic Hadith books?