Is falling asleep during Qiyam al-Layl (night vigil prayers), to the extent of sleeping during the prayer itself, considered a form of jihad (struggle) in the way of Allah, as in the verse: "And those who strive for Us..."? Or is it a result of sins and transgressions, or an indication thereof? And is it obligatory to renew wudu' (ablution) as a result of sleeping during prayer? And is returning to sleep considered persistence in sin?

If drowsiness overcomes a worshiper, it is from the Sunnah (definition) to cease the prayer and sleep until the drowsiness departs, for the Prophet, peace and blessings be upon him, said: "If any of you feels drowsy while praying, he should lie down until sleep leaves him, for when one of you prays while drowsy, he might intend to seek forgiveness but instead curse himself." As for sleeping while sitting without leaning, it does not nullify ablution. However, sleeping during bowing (ruku'), standing (qiyam (definition)), or prostration (sujud (definition)) is a matter of difference of opinion among jurists, and it is more cautious to perform ablution after it.