Hadithcore
Mishkat al-Masabih, 2171

‘Uthmān b. ‘Affān said, “If anyone recites the end of <i>Āl ‘Imrān</i> (Qur’ān, 3) on a night, the reward for a night spent in prayer will be recorded for him.” Transmitted by Dārimī.

وَعَنْ عُثْمَانَ بْنِ عَفَّانَ رَضِيَ اللَّهُ عَنْهُ قَالَ: مَنْ قَرَأَ آخِرَ آلِ عِمْرَانَ فِي لَيْلَة كتب لَهُ قيام لَيْلَة. رَوَاهُ الدَّارمِيّ

References1 variant
In-Book Reference
Book 8, Hadith 61