Tahajjud

It is the prayer performed (not obligatory), After waking up from sleep in the middle of the night only for the sake of Allah, It is a minimum prayer of two raka’at as mentioned by the Prophet Muhammed PBUH.

Tahajjud prayers can be performed for two, four, six, eight, and twelve rak’ahs – but it can be done as much as possible according to your ability and making Wudu (ablution), I always want to pray it, but it is said to be an invitation from Allah SWT. It is a voluntary prayer, but really, it is whoever Allah blesses it with. It's been a long time since I've prayed Tahajjud. 

وَمِنَ ٱلَّيْلِ فَتَهَجَّدْ بِهِۦ نَافِلَةًۭ لَّكَ عَسَىٰٓ أَن يَبْعَثَكَ رَبُّكَ مَقَامًۭا مَّحْمُودًۭا

"And rise at 'the last' part of the night, offering additional prayers, so your Lord may raise you to a station of praise." (Quran, 17:79)

Those who perform Tahajjud prayer regularly are sure to earn the blessings of Allah. It is also said that this prayer brings a Muslim closer to the Almighty and his/her life is filled with peace and brightness. The holy Quran emphasizes the importance of Tahajjud prayer.

وَالَّذِيۡنَ يَبِيۡتُوۡنَ لِرَبِّهِمۡ سُجَّدًا وَّقِيَامًا‏

"who spend the night prostrating themselves before their Lord and standing " (Qur'an,  26:64)

وَمِنَ ٱلَّيْلِ فَسَبِّحْهُ وَإِدْبَـٰرَ ٱلنُّجُومِ

"And glorify Him during part of the night and at the fading of the stars." (Qur'an, 52:49)

Allah's Messenger (ﷺ) said, "Our Lord, the Blessed, the Superior, comes every night down on the nearest Heaven to us when the last third of the night remains, saying: "Is there anyone to invoke Me, so that I may respond to invocation? Is there anyone to ask Me, so that I may grant him his request? Is there anyone seeking My forgiveness, so that I may forgive him?"