Joining Maghrib and ‘Isha’ because of the curfew

What is the ruling on giving two adhans and two iqaamahs when joining prayers?

Can a person who travels and stays somewhere for one day join and shorten his prayers?

A traveller joined two prayers together at the time of the earlier one, then he went back to his city before the time for the later prayer began

Do the rulings on travellers apply to one who intends to stay for three days?

Ruling on prayer in congregation for one who is sick and one who cannot control najaasah (impurity)

The traveller may shorten his prayers even if he is not encountering any difficulty

If he prays ‘Isha’ with Maghrib at the time of Maghrib, he can pray Witr immediately after that.

Should a traveler pray four rak’ahs with the congregation or pray two rak’ahs on his own?

How should missed prayers be made up?