Question 15: Is adopting Rukhsah (concession) in religious matters stand as an indication of encroachment or negligence?

Answer: Adopting Rukhsah in religious matters is permissible if it designates the Shar`ee (Islaamic legal) Rukhsah which Allaah and His Messenger (peace be upon him) prescribed, such as the Rukhsah given to the traveler to break their Sawm (Fast) during travel and to shorten the four-Rak`ah Salaah (Prayer consisting of four units) to only two Rak`ahs as well as to combine the Duhr (Noon) and `Asr (Afternoon) Prayers and Maghrib (Sunset) and `Ishaa’ (Night) Prayers at the time of the earlier or the later one during travel... read more here.