Does combining prayers helps attain the best time (Awwal Waqt) for the second prayer as well or should it be prayed later in its traditional time? Is there consensus on this issue among the Maraji'?
The Quranic verses regarding timing of obligatory Prayers ( Al-Israa 78 and Hood 114) are very clear that there are three timings only; Fajr and Midday and Maghrib.
The Prophet Muhammad (SAWA) had prayed Zohr and Asr together, and Maghrib and Isha together according to authentic Hadeeths in Saheeh al-Bukhari (Mawaqeet al-Salaah , Hadeeth number 516, 529) and Saheeh Muslim, Hadeeth number 1146, 1147).
We follow the Prophet (SAWA) in each and every matter, and combine when we need to combine but separate the Prayers as well because both ways is allowed.
Many of our Ulama say that combining the Prayers is better while some Ulama say that separating the Prayers is better if you can.
Wassalam.