What is the ruling on one who deliberately wastes a prayer or causes it to be missed, despite knowing beforehand the likelihood of that happening? And what is the ruling on one who prays the Sunnah before the Fard, knowing that he will not catch the Fard? And what is the ruling on one who prays Fajr with ablution after which he slept, doubting its validity? And what is the ruling on one who sleeps after waking up for Fajr prayer, thinking he will be able to wake up again?

Frequent questions about obsessive thoughts are blameworthy. Delaying prayer intentionally is a major sin, but not disbelief (kufr). Sleeping before the prayer time begins is permissible, and it is recommended to take measures to wake up. There is no sin on one who does not wake up. Performing supererogatory (nafilah) prayers before obligatory (fard) prayers when time is short is a matter of scholarly disagreement, but the fatwa (definition) we follow is to begin with the obligatory prayer. Deep sleep nullifies ablution (wudu) and necessitates re-performing the prayer. As for light sleep, there is more leniency concerning it. None of what has been mentioned constitutes disbelief (kufr).