maṣdarزَيْغٌ زَوْغٌmuḍāriʿيَزِيغُ يَزُوغُ تَزِيغُ
Core sense — he, or it, declined, deviated, or turned aside from the right coursegenerated
1.1he, or it (a thing), turned aside from the right course or direction, and from the truth—زَيْغٌ
maṣdar زَيْغٌ, زَيَغَانٌ, زَيْغُوغَةٌ, and زُيُوغٌ.
This is Er-Rāghib's explanation of it.
زاغ, is a variant of the same dialect.
In Qur'ān 3:5, زَيْغٌ means a doubting, and a declining from the truth.
Qur’ān 3:7 matched to Lane’s own quotation of it Lane cites “Kur iii. 5”
Qur’ān 3:7 Lane quotes this verse
هُوَ ٱلَّذِىٓ أَنزَلَ عَلَيْكَ ٱلْكِتَـٰبَ مِنْهُ ءَايَـٰتٌ مُّحْكَمَـٰتٌ هُنَّ أُمُّ ٱلْكِتَـٰبِ وَأُخَرُ مُتَشَـٰبِهَـٰتٌ ۖ فَأَمَّا ٱلَّذِينَ فِى قُلُوبِهِمْ زَيْغٌ فَيَتَّبِعُونَ مَا تَشَـٰبَهَ مِنْهُ ٱبْتِغَآءَ ٱلْفِتْنَةِ وَٱبْتِغَآءَ تَأْوِيلِهِۦ ۗ وَمَا يَعْلَمُ تَأْوِيلَهُۥٓ إِلَّا ٱللَّهُ ۗ وَٱلرَّٰسِخُونَ فِى ٱلْعِلْمِ يَقُولُونَ ءَامَنَّا بِهِۦ كُلٌّ مِّنْ عِندِ رَبِّنَا ۗ وَمَا يَذَّكَّرُ إِلَّآ أُو۟لُوا۟ ٱلْأَلْبَـٰبِHe it is Who has sent down to thee the Book: In it are verses basic or fundamental (of established meaning); they are the foundation of the Book: others are allegorical. But those in whose hearts is perversity follow the part thereof that is allegorical, seeking discord, and searching for its hidden meanings, but no one knows its hidden meanings except Allah. And those who are firmly grounded in knowledge say: "We believe in the Book; the whole of it is from our Lord:" and none will grasp the Message except men of understanding.Abdullah Yusuf Ali, The Holy Qur’ān (1934)
1.1.1the sun declined [from the meridian], so that the shade turned from one side to the other—زَاغَتِ الشَّمْسُ
maṣdar زَيْغٌ and زُيُوغٌ.
1.1.2figurative · مجازthe eye, or the eyes, or the sight, became dim, or dull—زاغ البَصَرُ
.
So in the phrase مَا زَاغَ البَصَرُ in Qur'ān 53:17.
Or, as some say, زَاغَتِ الأَبْصَارُ means the eyes turned aside from their places, as with a man in fear.
Qur’ānic occurrences Form 1 3 shown of 6
33:10
إِذْ جَآءُوكُم مِّن فَوْقِكُمْ وَمِنْ أَسْفَلَ مِنكُمْ وَإِذْ زَاغَتِ ٱلْأَبْصَـٰرُ وَبَلَغَتِ ٱلْقُلُوبُ ٱلْحَنَاجِرَ وَتَظُنُّونَ بِٱللَّهِ ٱلظُّنُونَا۠Behold! they came on you from above you and from below you, and behold, the eyes became dim and the hearts gaped up to the throats, and ye imagined various (vain) thoughts about Allah!
38:63
أَتَّخَذْنَـٰهُمْ سِخْرِيًّا أَمْ زَاغَتْ عَنْهُمُ ٱلْأَبْصَـٰرُ"Did we treat them (as such) in ridicule, or have (our) eyes failed to perceive them?"
53:17
مَا زَاغَ ٱلْبَصَرُ وَمَا طَغَىٰ(His) sight never swerved, nor did it go wrong!
Occurrences of this form in the Qur’ān, not Lane’s choice of verse. They show the word in use; they do not say which sense above applies. Where more occur than are shown, the shortest āyāt are chosen.
Show Lane's original text
, aor. يَزِيغُ , inf. n. زَيْغٌ (S, O, Msb, K) and زَيَغَانٌ and زَيْغُوغَةٌ (O, K) and زُيُوغٌ , (TA,) He, or it, (a thing, Msb,) declined, deviated, swerved, or turned aside, (S, O, Msb, K,) from the right course or direction, accord. to an explanation of زَيْغٌ by Er-Rághib; and from the truth: (TA:) and زاغ , aor. يَزُوغُ , inf. n. زَوْغٌ , is a dial. var. thereof. (Msb, TA. *) In the Kur iii. 5, (O,) زَيْغٌ means A doubting, and a declining, or deviating, from the truth. (O, K.) You say also, زَاغَتِ الشَّمْسُ , (S, Msb, K,) aor. تَزِيغُ , inf. n. زَيْغٌ (Msb, TA) and زُيُوغٌ , (TA,) The sun declined [from the meridian], (S, * Msb, K,) so that the shade turned from one side to the other. (S, * K.) And زاغ البَصَرُ , (S, O, K,) inf. n. زَيْغٌ , (TA,) The eye, or eyes, or the sight, became dim, or dull: (S, O, K, TA:) so in the phrase مَا زَاغَ البَصَرُ in the Kur [liii. 17]: (O, TA:) or, as some say, زَاغَتِ الأَبْصَارُ signifies the eyes turned aside from their places; as in the case of a man in fear. (TA.)