What is the ruling on shortening the prayer for a traveler who works for two weeks or less in an area approximately four hours away from his home, and what is the ruling on praying behind followers of differing madhahib who believe in the creation of the Qur’an and associate partners with Allah?

It is permissible for you to shorten the four-rak'ah prayers and combine prayers during your travel if the distance exceeds 83 km. Upon arrival, if you intend to stay for four days or more, then you are a resident and must complete the prayer. If it is proven that the imams of the mosques have heretical innovations (bid'ah kufrīyah), then do not pray behind them and pray elsewhere. If that is not possible, then pray in congregation at your place of residence.