What is the duration of the interval between the two adhan calls for Fajr and Jumu'ah?

Question:
How long is the interval between the first adhan and the second adhan for Fajr?

Answer:
It should be as the Prophet (peace and blessings be upon him) said: , it should not be a long time, but a little before Fajr; so that people are alerted: the one who needs to perform wudu, and the one who needs to perform ghusl. One should not hasten too much after the middle of the night, but it should be close to Fajr so that the benefit is not lost. If it is done too early, the benefit is lost, they leave it and do not care about it, and they sleep. But if it is close to Fajr, it wakes up the sleeper and brings back the one who has been standing in long prayer; because by it he knows that Fajr is near. The Sunnah is that the first adhan should not be far from the last adhan; for this reason, in some narrations of the hadith of Bilal, it is said: "There is nothing between them except that this one goes up and this one comes down," meaning it is close.
Q: Some mu'adhdhins make the interval between the first adhan and the second adhan one hour?
A: This is from his ijtihad, there is no clear evidence for it. An hour or half an hour, all of it is approximate. He extends it and performs witr.
Q: It is reported in some narrations that it is the length of fifty verses?
A: No, that is between the adhan for Fajr and the iqamah.
Q: And the two adhan calls for Jumu'ah?
A: The Companions did it in the time of 'Umar (may Allah be pleased with him) and after him; he ordered the first adhan to alert people that the day is Jumu'ah, and the Companions (may Allah be pleased with them) agreed with him, and the Messenger (peace and blessings be upon him) said: .