Question: Some Youth break their fast solely on the setting of the disk of the sun and they do not wait to hear the Adhaan. They find in the masjid debate and dispute with the elders [due to this issue]. So what is your advice?
Answer: “This occurs in the Haram, otherwise where else. As for those who break their fast solely on the setting of the sun, then this one achieved the Sunnah. The one who delays the iftar falls into the opposition of the Sunnah. However, if this leads to corruption, trial, differing and problems, then hold back, Oh fasting ones, and enlighten the people and spread the Sunnah between them.
The Ahaadith are clear. The Messenger sallahu alayhi w salam was on a journey. He said to his servant: Dismount and mix water with saweeq (barely) for us. So the servant said: It is still daytime. So the Messenger sallahu alayhi wa salam said: Dismount and mix it for us. So the servant said: It is still daytime. So the Prophet sallahu alayhi wa salam said: Mix it for us. So he dismounted and mixed the water with the saweeq.
[Reported by Al-Bukhari no. 1956]
The point is that this nation will continue to be upon good as long as they hasten the iftar and delay the suhoor. So it is legislated for this nation and its from its distinguishing characteristics and the difference between it and the Jews and Christians. They (the Muslims) hasten the iftar and delay the suhoor. So this is the Sunnah and it is necessary for it to be spread”.
[Taken from: http://www.sahab.net/forums/index.php?showtopic=61620%5D
Faisal Ibn Abdul Qaadir Ibn Hassan