Q 4: The Imam who leads Tarawih prayer in Ramadan delays the Witr (Prayer with an odd number of units) until after Fajr (Dawn) Prayer is over. Moreover, there is a tradition that the Imam turns his face towards the Ma'mums (persons being led by an Imam in Prayer) after concluding Tarawih saying to them, 'Determine your intention to offer Shaf` (two units of Prayer, particularly before the final unit of the odd-number prayer) and Witr. Was this act observed by the Salaf or not? (Part No. 7; Page No. 189)?If so, what differentiates between these three Rak`ahs (Witr and Shaf`) from other supererogatory prayers singling them out with a specific intention and utterance even though all supererogatory prayers are Shaf` (dual)? Is it an act of Bid`ah (innovation in religion) to utter such saying or does it have special merit, and thus should be uttered?