Allah says :

[وَلَقَدْ ءَاتَيْنَآ إِبْرَهِيمَ رُشْدَهُ مِن قَبْلُ وَكُنَّا بِهِ عَـلِمِينَ ]

(And before, We indeed gave Ibrahim his integrity, and We were indeed most knowledgeable about him)(21:51). Then Allah says:

[وَهَدَاهُ إِلَى صِرَطٍ مُّسْتَقِيمٍ]

(and guided him to a straight path.) which means to worship Allah alone, without partners or associate, in the manner that He prescribed and which pleases Him.

[وَءاتَيْنَـهُ فِى الْدُّنْيَا حَسَنَةً]

(And We gave him good in this world,) meaning, `We granted him all that a believer may require for a good and complete life in this world.'

[وَإِنَّهُ فِى الاٌّخِرَةِ لَمِنَ الصَّـلِحِينَ]

(and in the Hereafter he shall be of the righteous.) Concerning the Ayah:

[وَءاتَيْنَـهُ فِى الْدُّنْيَا حَسَنَةً]

(And We gave him good in this world,) Mujahid said: "This means a truthful tongue.''

[ثُمَّ أَوْحَيْنَآ إِلَيْكَ أَنِ اتَّبِعْ مِلَّةَ إِبْرَهِيمَ حَنِيفًا]

(Then, We have sent the revelation to you: "Follow the religion of Ibrahim (he was a) Hanif. ..) meaning, `because of his perfection, greatness, and the soundness of his Tawhid and his way, We revealed to you, O Seal of the Messengers and Leader of the Prophets ,'

[أَنِ اتَّبِعْ مِلَّةَ إِبْرَهِيمَ حَنِيفًا وَمَا كَانَ مِنَ الْمُشْرِكِينَ]

(Follow the religion of Ibrahim (he was a) Hanif and he was not of the idolators.) This is like the Ayah in Surat Al-An`am:

[قُلْ إِنَّنِى هَدَانِى رَبِّى إِلَى صِرَطٍ مُّسْتَقِيمٍ دِينًا قِيَمًا مِّلَّةَ إِبْرَاهِيمَ حَنِيفًا وَمَا كَانَ مِنَ الْمُشْرِكِينَ ]

(Say: "Truly, my Lord has guided me to a straight path, a right religion, the religion of Ibrahim, (he was a) Hanif and he was not of the idolators.'') (6:161). Then Allah rebukes the Jews,

[إِنَّمَا جُعِلَ السَّبْتُ عَلَى الَّذِينَ اخْتَلَفُواْ فِيهِ وَإِنَّ رَبَّكَ لَيَحْكُمُ بَيْنَهُمْ يَوْمَ الْقِيَـمَةِ فِيمَا كَانُواْ فِيهِ يَخْتَلِفُونَ ]

(124. The Sabbath was only prescribed for those who differed concerning it, and verily, your Lord will judge between them on the Day of Resurrection about what they differed over.)