ENOfficial
Mu'adh b. Jabal reported God’s Messenger as saying, “If any Muslim goes to bed in a state of purity making mention of God, then is disturbed during the night and asks God for good, God will give it to him.” Ahmad and Abu Dawud transmitted it.
Source: sunnah.com
Other translations
Arabic
وَعَنْ مُعَاذِ بْنِ جَبَلٍ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «مَا مِنْ مُسْلِمٍ يَبِيتُ عَلَى ذِكْرٍ طَاهِرًا فَيَتَعَارَّ مِنَ اللَّيْل فَيسْأَل اللَّهُ خَيْرًا إِلَّا أَعْطَاهُ اللَّهُ إِيَّاهُ» . رَوَاهُ أَحْمد وَأَبُو دَاوُد
sunnah.com