muḍāriʿـِيَفْعِلُ·ـُيَفْعُلُ
Core sense — he drew back from the thing, he turned back from itgenerated
1.1he drew back from the thing, refrained from it, shrank from it in awe or fear—نَكَثَ عَنْهُ
and sometimes نَكُصَ, as will be shown below; maṣdar نُكُوصٌ, نَكُصٌ, مَنْكَصٌ, and نَكَصَانٌ.
he turned back from a thing he had applied himself to—نَكَصَ عَلَى عَقِبَيْهِ
Aboo-Turáb gives this form.
Also على عَقِبِهِ, with; some allow only the latter, others allow the former as well.
The thing meant is a good thing, and sometimes an evil thing; or a good thing in particular, the application to an evil thing being irregular. [See the Kur, 23:68.]
Hence انتكص, as synonymous with نكص, though we have not heard it.
Qur’ānic occurrences Form 1 1 shown of 2
23:66
قَدْ كَانَتْ ءَايَـٰتِى تُتْلَىٰ عَلَيْكُمْ فَكُنتُمْ عَلَىٰٓ أَعْقَـٰبِكُمْ تَنكِصُونَ"My Signs used to be rehearsed to you, but ye used to turn back on your heels-
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
, (A, K,) [aor. نَكِصَ , and sometimes نَكُصَ , as will be shown below,] inf. n. نُكُوصٌ (S, IF, A, Msb, K) and نَكُصٌ (A, K) and مَنْكَصٌ (K) and نَكَصَانٌ , (MA,) He receded, retired, or drew back from the thing, or affair, refrained, forbore, abstained, or desisted, from it; recoiled from it, shrank from it, or drew back from it in awe or fear; (S, IF, A, Msb, K;) as also نَكَثَ عَنْهُ . (Aboo-Turáb, TA.) You say also, نَكَصَ عَلَى عَقِبَيْهِ , (S, Msb, K,) or على عَقِبِهِ , (A,) aor. نَكُصَ (S, Msb) and نَكِصَ , (S,) or the latter only, (Sgh, TA,) or the former is allowable, (Zj, TA,) He turned back from a thing to which he had applied himself; (IDrd, S, * A, * Msb, * K, TA;) meaning a good thing; and sometimes an evil thing; (IDrd, TA;) or meaning particularly a good thing; or extr. with respect to an evil thing. (K.) [See the Kur, xxiii. 68.] Hence انتكص [as syn. with نكص ], though we have not heard it. (Mgh.)