بسم الله الرحمن الرحيم
و الصلاة و السلام على أشرف المرسلين
و على اله و اصحابه أجمعين

In the arabic language:

‘Ahd : agreement, pact, promise, covenant, commitment.
[al Mu’jam al ‘Arabi al Asasi, page 874]

In the Tariqa Karkariya:

Al ‘Ahd refers to the pure tawhid which was expressed during the covenant took on the children of Adam in the pre eternal world, full knowledge of the human soul and in the vision of the Divinity, when we heard without ears “Am I not your Lord?” and we answered without tongue “Yes (bala), we have testified”.

In the Holy Quran:

The word ‘ahd is mentioned around 46 times (throughout the book, we have used the book al mawsu’at al Kasanzaniya to determine the number of word repetition in the book of Allah) in the Quran, for example :

“And [mention, O Muhammad], when Abraham was tried by his Lord with commands and he fulfilled them. [Allah] said, “Indeed, I will make you a leader for the people.” [Abraham] said, “And of my descendants?” [ Allah ] said, “My covenant (‘ahd) does not include the wrongdoers.””
[surah al Baqara/verse 124].

“[those who] fulfill their promise (‘Ahd) when they promise; and [those who] are patient in poverty and hardship and during battle. Those are the ones who have been true, and it is those who are the righteous.”
[surah al Baqara / verse 177].

“But yes, whoever fulfills his commitment (‘Ahd) and fears Allah – then indeed, Allah loves those who fear Him.”
[surah alu ‘Imran / verse 76].

Those who fulfill the covenant (‘Ahd) of Allah and do not break the contract”
[surah al Ra’d / verse 20].

“And do not approach the property of an orphan, except in the way that is best, until he reaches maturity. And fulfill [every] commitment (‘Ahd) . Indeed, the commitment is ever [that about which one will be] questioned.”
[surah al Isra / verse 34].

“None will have [power of] intercession except he who had taken from the Most Merciful a covenant (‘Ahd).”
[surah Maryam / verse 87].

“So Moses returned to his people, angry and grieved. He said, “O my people, did your Lord not make you a good promise (‘Ahd)? Then, was the time of its fulfillment too long for you, or did you wish that wrath from your Lord descend upon you, so you broke your promise [of obedience] to me?””
[surah Ta Ha / verse 86].

“And We had already taken a promise (‘Ahd) from Adam before, but he forgot; and We found not in him determination.”
[surah Ta Ha / verse 115].

“Did I not enjoin (‘Ahd) upon you, O children of Adam, that you not worship Satan – [for] indeed, he is to you a clear enemy”
[surah Ya sin/ verse 60].

In the Hadith:

Mujashi (radiAllah ‘anhu) narrates: “My brother and I came to the Prophet ﷺ and I requested him to take the pledge of allegiance from us for migration. He said: “Migration has passed away with its people.” I asked: “For what will you take the pledge of allegiance from us then?” He said: “I will take (the pledge) for Islam and Jihad.””
[sahih Bukhari, hadith n°2758].

Um Atiyya (radiAllah ‘anha) narrates: “We gave the Pledge of allegiance to the Prophet ﷺ and he recited to me the verse “O Prophet, when the believing women come to you pledging to you that they will not associate anything with Allah […]” (60.12). And he also prevented us from wailing and lamenting over the dead. A woman from us held her hand out and said: “Such-and-such a woman cried over a dead person belonging to my family and I want to compensate her for that crying”. The Prophet did not say anything in reply and she left and returned. None of those women abided by her pledge except Um Sulaim, Um Al-`Ala’, and the daughter of Abi Sabra, the wife of Al-Mu`adh or the daughter of Abi Sabra, and the wife of Mu`ad.”
[sahih Bukhari, hadith n°4540].

Junada ibn Abi Umayyah narrates: “We entered upon ‘Ubada bin As-Samit while he was sick. We said: “May Allah make you healthy. Will you tell us a Hadith you heard from the Prophet ﷺ and by which Allah may make you benefit?” He said: “The Prophet ﷺ called us and we gave him the Pledge of allegiance for Islam, and among the conditions on which he took the Pledge from us, was that we were to listen and obey (the orders) both at the time when we were active and at the time when we were tired, and at our difficult time and at our ease and to be obedient to the ruler and give him his right even if he did not give us our right, and not to fight against him unless we noticed him having open Kufr (disbelief) for which we would have a proof with us from Allah.””
[sahih Muslim hadith n°3433]

Mujashi (radiAllah ‘anhu) narrates: “My brother and I came to the Prophet ﷺ and I requested him to take the pledge of allegiance from us for migration. He said: “Migration has passed away with its people.” I asked: “For what will you take the pledge of allegiance from us then?” He said: “I will take (the pledge) for Islam and Jihad.””

Um Atiyya (radiAllah ‘anha) narrates: “We gave the Pledge of allegiance to the Prophet ﷺ and he recited to me the verse “O Prophet, when the believing women come to you pledging to you that they will not associate anything with Allah […]” (60.12). And he also prevented us from wailing and lamenting over the dead. A woman from us held her hand out and said: “Such-and-such a woman cried over a dead person belonging to my family and I want to compensate her for that crying”. The Prophet did not say anything in reply and she left and returned. None of those women abided by her pledge except Um Sulaim, Um Al-`Ala’, and the daughter of Abi Sabra, the wife of Al-Mu`adh or the daughter of Abi Sabra, and the wife of Mu`ad.”