Question: is witr compulsory after tahajjud?
Answer: According to the Hanafi Fiqh, witr prayer is wajib. The status of wajib is very close to that of fard. Witr has an odd number of raka'at prayed in pairs, with the final raka'ah prayed separately. ... Therefore, he or she who performs tahajjud (night prayer) regularly should perform witr after tahajjud.