The third century of the Hijra was the most fruitful period for the collection and development of hadiths of the Prophet (saw). During this period as many as six famous collections of hadiths popularly known as Sahih were written. There were Sahih Bukhari, Sahih Muslim, Sahih Tirmidhi, Sahih Abu Dawud, Sahih Nasa’i, and Sahih Ibn Majah.
The Prophet (saw) said: “The most virtuous of virtues is to connect and have good relations with those who cut you off, to give to those who deny you, and to overlook and pardon those who revile you.” (Ahmad)
The Prophet (saw) said: “The key to Paradise is Laa ilaaha illallah (none is worthy of worship except Allah) and its doors are Laa haula walaa quwwata illa billah (there is no might or power except with Allah).”