In The Name of Allaah, The Most Merciful, The Bestower of Mercy

Shaikh Saaleh Al-Fawzaan [may Allaah preserve him] said:

The first command in the Mus’haf is the statement of Allaah [The Most High]:

يَـٰٓأَيُّہَا ٱلنَّاسُ ٱعۡبُدُواْ رَبَّكُمُ ٱلَّذِى خَلَقَكُمۡ وَٱلَّذِينَ مِن قَبۡلِكُمۡ لَعَلَّكُمۡ تَتَّقُونَ

ٱلَّذِى جَعَلَ لَكُمُ ٱلۡأَرۡضَ فِرَشً۬ا وَٱلسَّمَآءَ بِنَآءً۬ وَأَنزَلَ مِنَ ٱلسَّمَآءِ مَآءً۬ فَأَخۡرَجَ بِهِۦ مِنَ ٱلثَّمَرَٲتِ رِزۡقً۬ا لَّكُمۡ‌ۖ فَلَا تَجۡعَلُواْ لِلَّهِ أَندَادً۬ا وَأَنتُمۡ تَعۡلَمُونَ

O mankind! Worship your Lord (Allah), Who created you and those who were before you so that you may become Al-Muttaqun (the pious) – Who has made the earth a resting place for you, and the sky as a canopy, and sent down water (rain) from the sky and brought forth therewith fruits as a provision for you. Then do not set up rivals unto Allah (in worship) while you know (that He Alone has the right to be worshipped). [Surah Al-Baqarah’ Aayaat 21-22]

The statement ‘There is no deity worthy of worship except Allaah’ necessitates ‘negation’ and ‘affirmation’. Negating every other thing worshipped besides Allaah because they are not worthy of worship, and affirming that Allaah alone is the true deity worthy of worship. The religion of Tawheed is founded upon these two foundations, just as Allaah stated that Ibraaheem [alayhis salaam] said to his people:

وَإِذۡ قَالَ إِبۡرَٲهِيمُ لِأَبِيهِ وَقَوۡمِهِۦۤ إِنَّنِى بَرَآءٌ۬ مِّمَّا تَعۡبُدُونَ

إِلَّا ٱلَّذِى فَطَرَنِى فَإِنَّهُ ۥ سَيَہۡدِينِ

And (remember) when Ibrahim (Abraham) said to his father and his people: “Verily, I am innocent of what you worship; Except Him (i.e. I worship none but Allah Alone) Who did create me, and verily, He will guide me.”

[Surah Az-Zukhruf’ Aayaat 26-27]

This was the path of every Messenger sent by Allaah [to the people]. Allaah [The Most High] said:

وَلَقَدۡ بَعَثۡنَا فِى ڪُلِّ أُمَّةٍ۬ رَّسُولاً أَنِ ٱعۡبُدُواْ ٱللَّهَ وَٱجۡتَنِبُواْ ٱلطَّـٰغُوتَ‌ۖ

And verily, We have sent among every Ummah (community, nation) a Messenger (proclaiming): “Worship Allah (Alone), and avoid (or keep away from) Taghut (all false deities, etc. i.e. do not worship Taghut besides Allah).” [Surah An-Nahl’ Aayah 36]

 

Allaah [The Most High] said:

فَمَن يَكۡفُرۡ بِٱلطَّـٰغُوتِ وَيُؤۡمِنۢ بِٱللَّهِ فَقَدِ ٱسۡتَمۡسَكَ بِٱلۡعُرۡوَةِ ٱلۡوُثۡقَىٰ لَا ٱنفِصَامَ لَهَا‌ۗ

Whoever disbelieves in Taghut and believes in Allah, then he has grasped the most trustworthy handhold that will never break.

[Surah Al-Baqarah’ Aayah 256]

Whoever says that ‘There is no deity worthy of worship except Allaah’ has indeed declared his freedom from every other thing worshipped besides Allaah and obligated on himself [or herself] to worship Allaah [alone]. This is a covenant obligated by a person on himself [or herself]. [Allaah (The Most High) said]:

فَمَن نَّكَثَ فَإِنَّمَا يَنكُثُ عَلَىٰ نَفۡسِهِۦ‌ۖ وَمَنۡ أَوۡفَىٰ بِمَا عَـٰهَدَ عَلَيۡهُ ٱللَّهَ فَسَيُؤۡتِيهِ أَجۡرًا عَظِيمً۬ا

Then whosoever breaks his pledge, breaks only to his own harm, and whosoever fulfills what he has covenanted with Allah, He will bestow on him a great reward.

[Surah Al-Fath’ Aayah 10]


Source; Muhaadaraat Fil Aqeedah Wad-Da’wah’ pages 15-16. Abridged and slightly paraphrased