And (remember) when Ibrahim (Abraham) said: "My Lord! Show me how You give life to the dead:" He (Allah) said: "Do you not believe then?" He (Ibrahim) said: "Yes! But to satisfy my own understanding." He (Allah) said: "Take four birds; Tame them to turn (fly) to you; (Slaughter them into pieces and) put a portion of them (the birds) on every hill, and (then) call to them they will come to you (flying) with speed. Then know that Allah is Highest in Power, Wise."