Virtue: In a report by Ibn Al-Sunni on the authority of Zayd Ibn Thabit, that he said, “I complained to the Prophet of my inability to sleep; then he told me to read these words:
“Allahumma ghaaratin nujum, wa hada aaa til-`ooyun, wa anta hayyun qayyoom, laa taaa’ khuzooka sinatuwwa laa nawm; ya hayuu ya qayyoom, ahdee laylee wa ‘aneem `ayynee.
O Allah, stars have set, eyes have rested, You alone are the Ever-Alive, and the Self-Subsisting Source of all beings; neither slumber nor sleep overtakes You. Make my night comforting for me, and bring sleep unto my eyes.”
Zayd (may Allah be pleased with him) said, ‘When I said these words, I was cured of my condition.’
Reference: (Hisnul Hasin)