The time for offering Tahajjud is upto Azaan of Fajr .If one gets up an hour before Fajr one can offer this prayer conveniently
I have read the various threads on tahajjud. I am still confused on how to begin. What to say before takbir. If there are any dua specific to tahajjud and how to end. If any one can help i would appreciate it. I follow the hanafi madhab. Jazak allah.