What is the ruling on delaying a prayer past its prescribed time due to sleep or laziness, and is that considered disbelief (kufr)?

Previously, the scholarly opinions on the ruling concerning one who is negligent in prayer, and the extent to which it constitutes disbelief, have been clarified. There have also been severe warnings against those who delay prayer beyond its prescribed time without a valid excuse.

Among the helpful means to wake up for Fajr prayer is to avoid staying up late without a legitimate Shar'i benefit.