Is there a voluntary prayer called Salat al-Awwabin, consisting of six rak'ahs after the Maghrib prayer, and prayed two by two?

There are hadiths that encourage prayer between Maghrib and Isha. Among them is what An-Nasa'i narrated from Hudhaifah, may Allah be pleased with him, that he prayed Maghrib with the Prophet, peace and blessings be upon him, and then continued praying until Isha. The Hanafis, Malikis, Shafi'is, and Hanbalis have explicitly stated the desirability of praying between Maghrib and Isha. The Hanbalis consider it part of Qiyam (definition) al-Layl (night prayer). Some jurists refer to it and Duha prayer as "Salat al-Awwabin" (prayer of the oft-returning to Allah). As mentioned in Mughni al-Muhtaj, it is also called "Salat al-Ghaflah" (prayer of heedlessness). Narrations have been mentioned regarding its virtue, such as the hadith (definition) in At-Tirmidhi: "Whoever prays six rak'ahs between Maghrib and Isha, it will be written for him as the worship of twelve years."