What is the ruling on intentionally turning off the lights for the sake of devotion (khushu') in prayer, and does this constitute imitation of the Children of Israel? What is the preferred view on this issue among the sayings of Ibn Baz, Al-Uthaymeen, and Al-Khudair?

Praying in a dark place is permissible, especially if it is for the sake of achieving khushu' (devotion) and averting distractions. Contemporary scholars have issued fatwas (religious edicts) allowing this. The basic principle for praying in darkness is permissibility, and authentic hadiths have been narrated indicating that the Prophet, peace and blessings be upon him, prayed in darkness, such as the hadith from Aisha, may Allah be pleased with her, stating that houses at that time did not have lamps.

There is no harm in extinguishing lights to achieve khushu' as long as it does not result in harm, such as worshippers stumbling or belongings being stolen. Furthermore, keeping the light on during prayer is not an obligation, a pillar, or a recommended act, and the prayer is valid regardless of the presence of light.