🔊God is the only worshipped because He is attributed with Complete Godship and Lordship Attributes
God is dominant in universe.

🔊la ilaha illa Allah Allah👇
means the only true worshipped is Allah

🔊Muhammad Rasulu Allah👇
means I follow only him, nobody else and my true love for him is proved through my following and obeying him
-No true love without obedience otherwise it’s fake
Allah’s Messenger (ﷺ) said, “By Him in Whose Hands my life is, none of you will have faith till he loves me more than his father and his children.
[Bukhari: 14]

🔊Pillars of Monotheism are two
1. Affirmation of worship only to Allah
2. Nullification of worship to all gods except Allah

🔊Conditions of Monotheism
1. Knowledge العلم
2. Certainty اليقين
3. Sincerity الإخلاص
4. Truthfulness الصدق
5. Love المحبة
6. Submission الإنقياد
7. Acceptance القبول

🔊Benefits of la ilaha illa Allah

Benefits of tawheed monotheism
Please note that all the words below are said by Prophet Muhammad peace be upon him

1. It revives faith in one’s heart
{Musnad Ahmed 6/8695}

2. The best word ever
[Albani Silsila Saheeha 1/346]

3. The most beloved word to Allah
{Muslim 14/ 2137}

4. It brings success to life and hereafter
[Ahmed] & [El Fath 7/156]

5. It is the entire and devoted religion
Surah Ezomar verses 3
{Fath El Qadir Volume 4 / 449]
{El Anfal : 39}

6. It purifies its invocator
[Qurtubi: 19/201]

7. Allah created creation, paradise and sent down books for it
[Ibn Kathir 3/175]

8. It is the covenant Allah promised his creation
{Ibn Kathir 3/441}

9. It wipes out sins
[Ahmed, Bukhari, Albani and Tirmidi]

10. Destroys and tears apart satan
[Fatawa Ibn Taymiyya 14/420]
[Silah El Yaqdan li Tard Shaytan : 39 –
“Arm of the Awake to Kick off Satan”]

11. Allah wonders at He who says it.
Sahih El Jamia 1/1821

12. Purification from hypocrisy
[Bukhari – Fath El Bari: 9/5401]

13. Fills what’s within the heavens and earth with hasanat (good deeds)
[Albani in Mishkat El Masabih Authentic on the condition of Muslim 1/281]

14. Allah glorifies he who says It
[Ahmed: Mishkat El Masabih 1/42]

15. Ibn El Qayyim said:
The mansions in Paradise are built based on Dikr. If you stop Dikr, the angels stop building the mansions.
[Al Waabil Sayyib. Page 159]
[Mentioned by Ibn El Qayyim im Ibn Abi Dunya]

16. It is the key of paradise

17. Allah answers supplications after one says it along with sending salutations Muhammad peace be upon him.

[Virtues of Word of Faith and our duty towards It By sheikh Muhammad Afifi]

18. After one does Wudue and says it angels put it in an envelop and stamp it.
Will be given to you as surprising gifts in paradise

It’s an implementation of your gardens in paradise
{ Sahih El Jamia 2/5152}

20. A reason to enter paradise
[Ahmed, Bukhari &Fatawa 15/8]

21. The most loved word to Allah and Prophet Muhammad peace be upon him

22. The first thing Allah wrote in the preserved slate/tablet (written book of all destinations)

23. If one says it after Fajr Prayer, he is considered as the best worshipper

Allah’s Messenger (ﷺ) said,” Whoever says: “La ilaha illal-lah wahdahu la sharika lahu, lahu-l-mulk wa lahul- hamd wa huwa ‘ala kulli shai’in qadir,” one hundred times will get the same reward as given for manumitting ten slaves; and one hundred good deeds will be written in his accounts, and one hundred sins will be deducted from his accounts, and it (his saying) will be a shield for him from Satan on that day till night, and nobody will be able to do a better deed except the one who does more than he.”
Sahih al-Bukhari 6403

24. It consists of the Greatest Name of Allah

25. As long as it is invoked, the universe will still exist
[Muslim with the explanation of Nawawi
1/178 – Book of Vanishing of Faith in the Last Time]

26. Allah firms its owner in the grave
[Ahmed & Muslim – Sahih El: 2/6708]

27. It makes your scale of deeds heavy on the Day of Judgment
See Sahih El Jamia 1/2817]

28. Saves its owner from torment of hellfire
Allah won’t punish he who says and says/ applies it
{Ibn Majah In Mishkat El Masabih 2/ 2378}

29. It’s the motto of believers in their graves
[Ibn Rajab in his book Kalimatul Ikhlass (Word of Faith: 56]

30. It’s a word which has a sound like bees around the Throne of Allah
{Ibn Majae in Silsila (Serie) 3/1352}

31. The word of justice in the verse
[Ibn Kathir 2/583]

32. The firmest handhold in the Ayah: {2:56}
“whoever disbelieves in Taghut and believes in Allah has grasped the most trustworthy handhold with no break in it. And Allah is Hearing and Knowing.”

👉Taghut: everything worshipped apart from Allah

33. The best deed and luggage for the next life
{Muslim 1/78}

34. Saves from hellfire
[Bukhari and Muslim]

35. It releases, sets free from being mean awkward or lazy or deoressed
اللهم اني اعوذ بك من الجبن
[Bukhari and Muslim]

36. The best of invocations
{Sahih El Jamia 1/ 1104}

37. The best reward
[El Hakim]

38. The word said by Jonah in the belly of the Whale
{El Fath 11/6346}
21:87) And [mention] the man of the fish, when he went off in anger and thought that We would not decree [anything] upon him. And he called out within the darknesses, “There is no deity except You; exalted are You. Indeed, I have been of the wrongdoers.”

39. It is said once a baby is born and when one dies
[Sahih El Jamia 2: 5149]

40. It is the best Name of Allah which if one prays to Allah with It his dua is certainly accepted on condition one eats halal food
And Iman is raised by it
[Sahih El Jamia 1/980]

In a nutshell, i would say it’s the secret of this universe Because Islam is based on It. Allah created us for this word as in Tafsir El Baghawi 7/380

By Ridouan Soumaa – Askamuslim

NB: translated and relied on the following reference:

فضائل كلمة التوحيد وواجبنا نحوها
Virtues of Word of Faith and our duty towards It
By sheikh Muhammad Afifi