What is the time for performing the rawatib of Fajr?

Question:
Their statement: "He prays the two rak'ahs of Fajr when he hears the call." Does this mention repeating the adhan?

Answer:
The adhan means: the final adhan of Fajr, which is before the iqamah.
Q: Did the Messenger (peace and blessings be upon him) pray and not repeat after the mu'adhdhin?
The Shaykh: No, after the adhan, once the adhan for the dawn has been called, he (peace and blessings be upon him) prays them. He used to pray them after the adhan and after the dawn had appeared, to be certain that the dawn had appeared.
As for responding to the mu'adhdhin, that is before that. The mu'adhdhin is to be responded to; it is a recommended practice (sunnah) to respond to the mu'adhdhin, whether in the house, in the mosque, on the road, or in any place. One responds to the mu'adhdhin. The Messenger (peace and blessings be upon him) said: whether he hears it in the mosque, in the house, on the road, while traveling, on an airplane, or in any place.