ع ھ دʿ-h-d
(س) عَهِدَ يَعْهَدُ عَهْدًاʿahida yaʿhadu ʿahdan: (1) with the preposition "اِلٰىilā": to give someone an emphatic command, to charge with responsibility (2) to promise, to make a covenant. ﴿وَلَقَدْ عَهِدْنَآ اِلٰٓى اٰدَمَ مِنْ قَبْلُ﴾ (Ṭā Hā 20:115)
عَهْدٌʿahd (also a noun, ism dhāt): covenant, promise, pledge. ﴿وَاَوْفُوْا بِالْعَهْدِ اِنَّ الْعَهْدَ كَانَ مَسْـُٔوْلًا﴾ (Al-Isrāʾ 17:34)
Form III (mufāʿalah) عَاهَدَ يُعَاهِدُ مُعَاهَدَةًʿāhada yuʿāhidu muʿāhadatan: to make a mutual pledge, to enter into a covenant. ﴿وَمَنْ اَوْفٰى بِمَا عٰهَدَ عَلَيْهُ اللّٰهَ﴾ (Al-Fatḥ 48:10)