[Pooya/Ali Commentary 17:79] Tahajjud is a prayer prayed after midnight but before dawn. Although tahajjud is an optional prayer, but it is considered "nearest to obligatory (wajib) prayer." The Holy Prophet said: "On the day of judgement I will be in "maqaman mahmuda" (a station of praise and glory) from where I will seek forgiveness for the sinners from the Lord who does what He wills." Aqa Mahdi Puya says: As a means may but when the nominative of this verb is Allah, it becomes a certainty. Maqaman mahmuda implies such distinction which no other created being shares. All commentators agree that it is because of this authority of intercession the Holy Prophet will be given the standard of praise and glory (liwa-i hamd) under which all the prophets and angels will stand together. Ahmad bin Hambal says: "The Holy Prophet said: 'O Ali, I and you will have the honour to address them. You will hold my standard under which all the prophets will gather'." The Holy Prophet will be the first and the foremost intercessor whose intercession will be accepted by Allah.