If he sneezes or hears a donkey braying whilst praying, should he say the dhikr narrated in the Sunnah?

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They stipulated that he should lead a communal du‘aa’ and not place one hand over the other; should he lead them in prayer or leave them?
In prostration, do all the toes have to touch the ground?

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They stipulated that he should lead a communal du‘aa’ and not place one hand over the other; should he lead them in prayer or leave them?
In prostration, do all the toes have to touch the ground?

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