Al-Baqara 2:260

And [remember] when Abraham said: “My Lord, show me how You give life to the dead.” He said: “Do you not believe?’’ He said: “I do believe, but just to reassure my heart[158].’’ Allah said: “Then take four birds and cut them into pieces, then put a piece of each of them on each mountain, then call them; they will come swiftly to you. And know that Allah is All-Mighty, All-Wise.”

[158] The Prophet (ﷺ) implied by saying: “We are more likely to doubt than Ibrāhīm” [Al-Bukhārī: 4537, Muslim: 151], when he heard that people said Abraham doubted. Scholars are of the opinion that Abraham wanted to reach the highest rank of knowledge ‘concrete certitude’ (haqq al-yaqīn).

And [mention] when Abraham said, "My Lord, show me how You give life to the dead." [Allāh] said, "Have you not believed?" He said, "Yes, but [I ask] only that my heart may be satisfied." [Allāh] said, "Take four birds and commit them to yourself.[107] Then [after slaughtering them] put on each hill a portion of them; then call them - they will come [flying] to you in haste. And know that Allāh is Exalted in Might and Wise."

[107] i.e., train them to come to you on command.

260. And (remember) when Ibrâhîm (Abraham) said, "My Lord! Show me how You give life to the dead." He (Allâh) said: "Do you not believe?" He [Ibrâhîm (Abraham)] said: "Yes (I believe), but to be stronger in Faith." He said: "Take four birds, then cause them to incline towards you (then slaughter them, cut them into pieces), and then put a portion of them on every hill, and call them, they will come to you in haste. And know that Allâh is All-Mighty, All-Wise."

And when Abraham said (unto his Lord): My Lord! Show me how Thou givest life to the dead, He said: Dost thou not believe? Abraham said: Yea, but (I ask) in order that my heart may be at ease. (His Lord) said: Take four of the birds and cause them to incline unto thee, then place a part of them on each hill, then call them, they will come to thee in haste, and know that Allah is Mighty, Wise.