The information below is based on Sahih Bukhari volume 2 book 21 numbers 238-241.

How many rakat / rakath (units) is Tahajjud salah?

• Muhammad (SAW) used to pray a total of 11 rakath for Tahajjud

How to pray Tahhajud salah?

• The Tahajjud prayer is prayed 2 rakath at a time and the last rakath is 1 rakath witr

When to pray Tahajjud salah?

• Tahajjud should be prayed in the last third of the night, ideally you want to be finished before Fajr
• Tahajjud prayer is known as the night prayer

What is Tahajjud salah?

• Tahajjud salah is known as the night prayer

Is Tahajjud a nafl (voluntary) prayer?

• Yes, Tahajjud prayer is a nafl prayer

What is the niyat / niyyat (intention) for Tahajjud prayer?

• Tahajjud Niyat Transliteration: Nawai tuan usallia lillahi ta’ala rak’atai swalathil Tahajjud nafli muthawaj-jihan ila jihatil ka’batish sharifathi Allahu Akbar
• Tahajjud Niyat Translation: I turn to Allah the most high with the intention for 2 unit prayer of Tahajjud that is voluntary facing towards the noble Ka’bah, Allah is most great
• Note: Niyat does not need to be specific, it needs to structured as above and intention must be in the heart

Is Tahajjud only prayed during Ramadan?

• No, Tahajjud can be prayed on any day and it is a very rewarding prayer

Is there a minimum/maximum rakats for Tahajjud prayer?

• There is no maximum rakat for Tahhajud, however one still needs to pray 2 rakath at a time
• A minimum of 2 rakath should be prayed for Tahajjud
• Note: information for this question is from research, I did not find it in a hadith