What is the authenticity of the hadith: "Indeed, Allah grants respite until, when the first third of the night has passed, He descends to the lower heaven and says, 'I am the King! Who is there to supplicate Me?'" And was it narrated by Muslim? And what is the authenticity of the hadith: "The closest the Lord, the Exalted, is to His servant is in the depths of the night, so if you are able to be among those who remember Allah at that hour, then be so?" And was it narrated by Abu Dawud?

The first hadith (definition) was narrated by Muslim from Abu Hurayrah, who reported that the Prophet, peace and blessings be upon him, said: "Allah descends to the lowest heaven every night when the first third of the night has passed, and says: 'I am the King! Who is there who supplicates Me so that I may answer him? Who is there who asks of Me so that I may give him? Who is there who seeks My forgiveness so that I may forgive him?' He continues to do so until dawn breaks."

The second hadith was narrated by Abu Dawud from Abu Umamah, from Amr ibn Abasah Al-Sulami, who said: "I said: 'O Messenger of Allah, which part of the night is most heard?' He said: 'The last depth of the night.'"

The narration mentioned in the question was narrated by Al-Tirmidhi from Abu Umamah, from Amr ibn Abasah, that the Prophet, peace and blessings be upon him, said: "The closest the Lord is to His servant is in the last depth of the night. If you can be among those who remember Allah at that hour, then be so."