Details about breaking the fast
It is narrated on the authority of Hadhrat Sahl (May Allah be well pleased with him), he says that the Holy Prophet (Sallallahu alaihi wa sallam) said: People will be in good as long as they are hasty in breaking their fasts i.e. when they break their fast as soon as the sun sets. This Hadith has been related by Bukhari and Muslim.
It is narrated on the authority of Hadhrat Abu Hurairah (May Allah be well pleased with him), he says that the Holy Prophet (Sallallahu alaihi wa sallam) said: Almighty Allah says: The most beloved to Me among all My slaves is the slave who make haste in breaking the fast (as soon as the sun sets). Tirmidhi has related this Hadith.
Delaying the breaking of the fast is a custom of the Jews and the Christians
It is narrated on the authority of Hadhrat Abu Hurairah (May Allah be well pleased with him), he says that the Holy Prophet (Sallallahu alaihi wa sallam) said: Islam will remain dominant as long as people will make haste in breaking their fasts as Jews and Christians delay breaking the fast. Abu Dawood and Ibn Majah have related this Hadith.
This Hadith says that Jews and Christians delay breaking their fast and Muslims should go against their customs and break their fasts as early as possible. It is mentioned in Ash‘atul Lama’aat that the honor and majesty of Islam is in opposing the customs of the enemies of Islam and (the pride of) religion itself depends on it.
It is a Sunnah to make haste in breaking the fast and in offering Salaat Ul Maghrib
It is narrated on the authority of Hadhrat Abu ‘Atiya (May Allah shower His mercy on him), he says: I and Masruq (both) went to Umm Al Momineen Hadhrat ‘Aisha Siddiqua (May Allah be well pleased with her). Masruq asked Hadhrat ‘Aisha (May Allah be well pleased with her): There are 2 Companions of the Holy Prophet (Sallallahu alaihi wa sallam) who don’t ever back off in good deeds. One of them makes haste in breaking the fast and in offering Salaat Ul Maghrib and the other (somewhat) delays breaking the fast and offering Salaat Ul Maghrib. On this, Hadhrat ‘Aisha (May Allah be well pleased with her) asked: Who is the Companion who makes haste in breaking the fast and offering Salaat Ul Maghrib? Masruq said: He is ‘Abdullah bin Mas’ud (May Allah be well pleased with him). Hadhrat ‘Aisha (May Allah be well pleased with her) said: Yes! The Holy Prophet (Sallallahu alaihi wa sallam) also used to make haste in breaking the fast and in offering Salaat Ul Maghrib. This Hadith has been related by Muslim.