"O you who believe! Do your duty to Allah and fear Him. Seek the means of approach to Him, and strive hard in His Cause as much as you can. So that you may be successful."
[Surat Al-Mā'idah, Ayah 35]
Shaykh Abdur-Rahman bin Naasir as-Sa'dee (رحمه الله) mentioned in his tafseer:
Islaam is the Sunnah, and the Sunnah is Islaam
The author (Imaam al-Barabahaaree) may Allah have Mercy on him stated:
"Know that Islaam is the Sunnah and the Sunnah is Islaam and neither of them can be established without the other."
Explanation (Shaykh Rabee' bin Hadee al-Madkhalee, may Allah preserve
A Benefit Regarding the Prayer: Shaykh Saaleh bin Fawzaan al-Fawzaan, May Allah Preserve Him
"...And among the establishment of the Prayer is the praying of it in the masjid with the congregation, for verily the congregation is obligatory upon the individuals - meaning, upon the people. So every Muslim
Q: "What is the degree of authenticity of the hadeeth "Differing of my Ummah is a Mercy (Rahmah)"' ?
A: "It is not authentic. This is from the speech of some of the salaf, from the speech of Qaasim ibn Muhammad regarding differing of the Companions of the Prophet (ﺻﻠﻰ الله عليه و سلام),