Al-Baqara 2:124

And [remember] when Abraham was tested by his Lord with certain words, which he fulfilled[51]. Allah said, “I will make you a leader for mankind.” He said, “And from among my descendants?” Allah said, “My covenant does not include the wrongdoers.”

[51] Allah assigned some tasks and commandments for Abraham (عليه السلام) to carry out, which he fulfilled dutifully.

And [mention, O Muḥammad], when Abraham was tried by his Lord with words [i.e., commands] and he fulfilled them. [Allāh] said, "Indeed, I will make you a leader for the people." [Abraham] said, "And of my descendants?" [Allāh] said, "My covenant does not include the wrongdoers."

124. And (remember) when the Lord of Ibrâhîm (Abraham) [i.e., Allâh] tried him with (certain) Commands,[24] which he fulfilled. He (Allâh) said (to him), "Verily, I am going to make you an Imâm (a leader) for mankind (to follow you)." [Ibrâhîm (Abraham)] said, "And of my offspring (to make leaders)." (Allâh) said, "My Covenant (Prophethood) includes not Zâlimûn (polytheists and wrong-doers)."

[24] (V.2:124) It is said that those commands were many. Some of them are as follows:
(A) To invite mankind to the Tauhîd (Islamic Monotheism).
(B) To show mankind the Manâsik (See V.2:128).
(C) To practise the characteristics of Al-Fitrah:
Narrated Abu Hurairah رضي الله عنه: I heard the Prophet صلى الله عليه وسلم saying:
Five practices are characteristic of Al-Fitrah:
(1) Circumcision.
(2) Shaving the pubic hair.
(3) Cutting the moustaches short.
(4) Clipping the nails.
(5) and depilating the hair of the armpits.
(Sahih Al-Bukhari, Hadith No.779, Vol.7)
Narrated Ibn Umar رضي الله عنهما Allâh’s Messenger صلى الله عليه وسلم said: "Cut the moustaches short and leave the beard (as it is)." (Sahih Al-Bukhari, Hadith No.781, Vol.7)
(D) It is also mentioned that Ibrâhîm عليه السلام was put to test: (1) When he عليه السلام was thrown in the Fire. (2) When he عليه السلام was ordered to slaughter his son. (Tafsir Ibn Kathir)

And (remember) when his Lord tried Abraham with (His) commands, and he fulfilled them, He said: Lo! I have appointed thee a leader for mankind. (Abraham) said: And of my offspring (will there be leaders)? He said: My covenant includeth not wrong-doers.