The Last Three Verses of Sūrah al-Baqarah

ʿAlī, peace be upon him, said,

“I cannot imagine anyone of sound mind going to sleep before reciting the last three verses of Sūrah al-Baqarah; they are truly a treasure from beneath the Throne.”

Reported by Ibn al-Ḍurays in Faḍāʾil al-Qurʾān (176) with a sound chain.

For the takhrīj of this report, click on this post: Reciting the Last Three Verses of Sūrah al-Baqarah at Bedtime

Sūrah al-Kāfirūn

It is recommended for one to recite Sūrah al-Kāfirūn before going to sleep. The proof is:

On the authority of Farwah b. Nawfal, [who narrated] from his father: that the Prophet, may the praise and protection of Allāh be upon him, said to Nawfal:

“Read {Say: O you disbelievers!}, then go to sleep at the end of it, for indeed it is a complete disavowal of polytheism.”

Reported by the Five except for Ibn Mājah, and the wording is that of Abū Dāwūd.

Source: Abū Dāwūd (5055), al-Tirmidhī (3403), al-Nasāʾī in al-Kubrá (10569) and (11645), Aḥmad (23807) and Ṣaḥīḥ al-Targhīb (605) by al-Albānī.