Contemplation about Allah(swt)

Kafi

محمد بن يحيى، عن أحمد بن محمد، عن الحسين بن سعيد، عن النضر بن سويد عن عاصم بن حميد قال: قال: سئل علي بن الحسين (عليه السلام) عن التوحيد فقال: إن الله عزوجل علم أنه يكون في آخر الزمان أقوام متعمقون فأنزل الله تعالى قل هو الله أحد والآيات من سورة الحديد إلى قوله: " وهو عليم بذات الصدور " فمن رام وراء ذلك فقد هلك.

Muhammad b. Yahya, from Ahmed b. Muhammad, from al Hussain b. Sa'eed, from al Nudhr b. Suwaid from Asim b. Hamid said: (I) asked Ali b. al Hussain(as) about tawhid(oneness/unity of Allah). He replied: "Indeed Allah(SWT) knew that in the end times there would be intellectual people so Allah(SWT) sent down, Surah al Ikhlas* (chapter in al-Qur'an) and the verses of Surat al-Hadid*(chapter of al-Qur'an) until His words (that is, the first six verses) , ". . . and He knows well that which is in the breasts." Therefore someone who seeks to go beyond that will perish.'"

*Surah al Ikhlas(Yusuf Ali translation)

In the name of Allah, the Beneficent, the Merciful
Say: He is Allah the One and Only; (1) Allah, the Eternal, Absolute; (2) He begetteth not, nor is He begotten; (3) And there is none like unto Him. (4)


*Surah Al Hadid(first 6 verses, Yusuf Ali translation):

In the name of Allah, the Beneficent, the Merciful
Whatever is in the heavens and on earth let it declare the Praises and Glory of Allah: for He is the Exalted in Might, the Wise. (1) To Him belongs the dominion of the heavens and the earth; it is He Who gives life and Death; and He has Power over all things. (2) He is the First and the Last, the Evident and the Hidden and He has full knowledge of all things. (3) He it is Who created the heavens and the earth in six Days, and is moreover firmly established on the Throne (of authority), He knows what enters within the earth and what comes forth out of it, what comes down from heaven and what mounts up to it. And He is with you wheresoever ye may be. And Allah sees well all that ye do. (4) To Him belongs the dominion of the heavens and the earth: and all affairs go back to Allah. (5) He merges Night into Day, and He merges Day into Night; and He has full knowledge of the secrets of (all) hearts.