And (remember) when We took a covenant from the Children of Israel, (saying): Worship none but Allah (alone) and be dutiful and good to parents, and to kindred, and to orphans and (the poor), and speak good to people and perform As-Salah and give Zakah. Then you slid back, except a few of you, while you are backsliders (83)

Allah reminded the Children of Israel of the commandments that He gave them, and the covenants that He took from them to abide by those commands, and how they intentionally and knowingly turned away from all of that. Allah commanded them to worship Him and to associate none with Him in worship, just as He has commanded all of His creatures, for this is why Allah created them. Allah said,

وَمَا أَرْسَلْنَا مِن قَبْلِكَ مِن رَّسُولٍ إِلَّا نُوحِي إِلَيْهِ أَنَّهُ لَا إِلَٰهَ إِلَّا أَنَا فَاعْبُدُونِ

(And We did not send any Messenger before you (O Muhammad ﷺ) but We revealed to him (saying): La ilaha illa Ana [none has the right to be worshipped but I (Allah)], so worship Me (alone and none else))(21:25), and,

وَلَقَدْ بَعَثْنَا فِي كُلِّ أُمَّةٍ رَّسُولًا أَنِ اعْبُدُوا اللَّهَ وَاجْتَنِبُوا الطَّاغُوتَ

(And verily, We have sent among every Ummah (community, nation) a Messenger (proclaiming): "Worship Allah (alone), and avoid the Taghut (all false deities,))(16:36).

This is the highest and most important right, that is, Allah's right that He be worshipped alone without partners.

After that comes the right of the creatures, foremost, the right of the parents. Allah usually mentions the rights of the parents along with His rights. For instance, Allah said,

 أَنِ اشْكُرْ لِي وَلِوَالِدَيْكَ إِلَيَّ الْمَصِيرُ

(Give thanks to Me and to your parents. Unto Me is the final destination)(31:14). Also, Allah said,

وَقَضَىٰ رَبُّكَ أَلَّا تَعْبُدُوا إِلَّا إِيَّاهُ وَبِالْوَالِدَيْنِ إِحْسَانًا

(And your Lord has decreed that you worship none but Him. And that you be dutiful to your parents)(17:23), until,

وَآتِ ذَا الْقُرْبَىٰ حَقَّهُ وَالْمِسْكِينَ وَابْنَ السَّبِيلِ

(And give to the kinsman his due and to the Miskin (poor) and to the wayfarer)(17:26).

The Two Sahihs record that Ibn Mas'ud said,

قُلْتُ:

يَا رَسُولَ اللهِ أيُّ الْعَمَل أَفْضَلُ؟

قَالَ: الصَّلَاةُ عَلى وَقْتِهَا

قُلْتُ: ثُمَّ أَيٌّ؟

قَالَ: بِرُّ الْوَالِدَيْنِ

قُلْتُ: ثُمَّ أَيٌّ؟

قَالَ: الْجِهَادُ فِي سَبِيلِ اللهِ

(I said, 'O Messenger of Allah! What is the best deed?' He said, 'Performing the prayer on time.' I said, 'Then what?' He said, 'Being kind to one's parents.' I said, 'Then what?' He said, 'Jihad in the cause of Allah.')

Allah then said,

وَالْيَتَامَىٰ 

(and to orphans) meaning, the young who have no fathers to fend for them.

وَالْمَسَاكِينِ 

(and Al-Masakin (the poor)), plural for Miskin, the one who does not find what he needs to spend on himself and his family. We will discuss these categories when we explain the Ayah of Surat An-Nisa' where Allah said,

وَاعْبُدُوا اللَّهَ وَلَا تُشْرِكُوا بِهِ شَيْئًا وَبِالْوَالِدَيْنِ إِحْسَانًا 

(Worship Allah and join none with Him (in worship); and do good to parents)(4:36).

Allah's statement,

وَقُولُوا لِلنَّاسِ حُسْنًا

(and speak good to people) meaning, say good words to them and be lenient with them, this includes commanding good and forbidding evil. Al-Hasan Al-Basri commented on Allah's statement,

وَقُولُوا لِلنَّاسِ حُسْنًا

(and speak good to people), "The good saying' means commanding good and forbidding evil, and being patient and forgiving. The 'good words to people', as Allah commanded, also includes every good type of behavior that Allah is pleased with." Imam Ahmad narrated that Abu Dharr said that the Prophet ﷺ said,

لَا تَحْقِرَنَّ مِنَ الْمَعْرُوفِ شَيْئًا وَإِنْ لَمْ تَجِدْ فَالْقَ أَخَاكَ بِوَجْهٍ مُنْطَلِقٍ

(Do not belittle any form of righteousness, and even if you did not find any good deed except meeting your brother with a smiling face, then do so.)

This Hadith was also collected by Muslim in his Sahih and At-Tirmidhi, who graded it Sahih.

Allah commands the servants to say good words to people, after He commanded them to be kind to them, thereby mentioning two categories of manners: good speech and good actions. He then emphasized the command to worship Him and the command to do good, ordaining the prayer and the Zakah,

وَأَقِيمُوا الصَّلَاةَ وَآتُوا الزَّكَاةَ

(and perform As-Salah and give Zakah). Allah informed us that the People of the Book, except for a few among them, ignored these orders, that is, they knowingly and intentionally abandoned them. Allah ordered this Ummah similarly in Surat An-Nisa' when He said,

وَاعْبُدُوا اللَّهَ وَلَا تُشْرِكُوا بِهِ شَيْئًا وَبِالْوَالِدَيْنِ إِحْسَانًا وَبِذِي الْقُرْبَىٰ وَالْيَتَامَىٰ وَالْمَسَاكِينِ وَالْجَارِ ذِي الْقُرْبَىٰ وَالْجَارِ الْجُنُبِ وَالصَّاحِبِ بِالْجَنبِ وَابْنِ السَّبِيلِ وَمَا مَلَكَتْ أَيْمَانُكُمْ إِنَّ اللَّهَ لَا يُحِبُّ مَن كَانَ مُخْتَالًا فَخُورًا

(Worship Allah and join none with Him (in worship); and do good to parents, kinsfolk, orphans, Al-Masakin (the poor), the neighbor who is near of kin, the neighbor who is a stranger, the companion by your side, the wayfarer (you meet), and those (servants) whom your right hands possess. Verily, Allah does not like such as are proud and boastful)(4:36).

Of these orders, this Ummah has practiced what no other nation before it has, and all praise is due to Allah.