(Al-Mawsoo'ah al-Fiqhiyyah al-Kuwaitiyyah, 34/117) What is Tahajjud? Tahajjud means specifically praying at night, and some scholars limited it to prayers that are offered at night after sleeping.

This prayer comprises four obligatory rakats. Jumuah prayer (offered on Fridays at noon). Tahajjud prayer (offered in the early hours of the morning. However, it is not compulsory). Tarawih prayer ...