The star of Ath-Thaqib.
Qatadah and others have said,
"The star has been named Tariq because it is only seen at night and it is hidden during the day."
His view is supported by what has been mentioned in the authentic Hadith that prohibits a man to come to his family Taruq. This means that he comes to them unexpectedly at nighttime.
Concerning Allah's statement,
الثَّاقِبُ
Ath-Thaqib.
Ibn Abbas said, "The illuminating."
Ikrimah said, "It is illuminating and it burns the Shaytan"
Then Allah says,
إِن كُلُّ نَفْسٍ لَّمَّا عَلَيْهَا حَافِظٌ