Advancing the Fajr Adhan to After Midnight

Question:
Your Eminence the Shaykh! Some people hold that it is permissible to advance the Fajr adhan, especially to after midnight. What is their evidence for that?

Answer:
The Sunnah is for it to be close to the dawn so as not to disturb the people, so that when they get up to prepare for the Fajr, it is close, half an hour before the adhan, a third of an hour is fine, so that the one who performs the Tahajjud prays at the end of the night, he rests at the end of the night, and he knows the approach of the dawn so that he can prepare. Whatever is closer to the dawn is more preferable, as stated in the hadith: there is nothing between them except that , meaning it is close.